USB描述符存儲在設備EEPROM中，枚舉時主機向設備發送GetDescriptor請求，設備收到請求后，將描述符信息返回給主機，主機分析返回來數據，判斷出設備類型后建立相應數據鏈接通道
描述符是用來描述自身信息的格式化的數據
Descriptor Hierarchy
This USB camera device uses a Video Interface Collection that includes the VideoControl interface (interface 0) and a single VideoStreaming interface (interface 1). The VideoStreaming interface features two alternate settings. The first alternate setting (0) has zero bandwidth associated with it (implied by the lack of an isochronous endpoint), so switching to this alternate setting frees all allocated bandwidth on the USB for this device. Alternate setting 1 is the operational part of the interface and contains the isochronous endpoint to supply the host with video data.
This figure presents the descriptor hierarchy.

——————/
據VC可找到從屬于其的VS
插上攝像頭——rmmod uvcvideo——insmod myuvc.ko
仿照lsusb.c寫
id_table：VC、VS，打印兩次設備描述符，內容同
——————/IAD接口聯合描述符，p45
A device must use an Interface Association Descriptor to describe a Video Interface Collection for each device function that requires a VideoControl Interface and one or more VideoStreaming interfaces.
重要成員bFirstinterface、bInterfaceConut
struct usb_host_config——struct usb_interface_assoc_descriptor(老版內核無該項)
——————/接口描述符
C930e的VC僅1種設置，VS有12種設置
——————/UVC規范自定義描述符
了解EU，看廠家數據手冊，uvc psec無定義

root@lyl:/# lsusb -v -d 046d:0843Bus 001 Device 022: ID 046d:0843 Logitech, Inc. Device Descriptor:bLength 18bDescriptorType 1bcdUSB 2.00bDeviceClass 239 Miscellaneous DevicebDeviceSubClass 2 ?bDeviceProtocol 1 Interface AssociationbMaxPacketSize0 64idVendor 0x046d Logitech, Inc.idProduct 0x0843 bcdDevice 0.13iManufacturer 0 iProduct 2 Logitech Webcam C930eiSerial 1 511DBF9EbNumConfigurations 1Configuration Descriptor:bLength 9bDescriptorType 2wTotalLength 2547bNumInterfaces 4bConfigurationValue 1iConfiguration 0 bmAttributes 0x80(Bus Powered)MaxPower 500mAInterface Association:bLength 8bDescriptorType 11bFirstInterface 0bInterfaceCount 2bFunctionClass 14 VideobFunctionSubClass 3 Video Interface CollectionbFunctionProtocol 0 iFunction 0 Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 0bAlternateSetting 0bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 1 Video ControlbInterfaceProtocol 0 iInterface 0 VideoControl Interface Descriptor:bLength 13bDescriptorType 36bDescriptorSubtype 1 (HEADER)bcdUVC 1.00wTotalLength 215dwClockFrequency 30.000000MHzbInCollection 1baInterfaceNr( 0) 1VideoControl Interface Descriptor:bLength 18bDescriptorType 36bDescriptorSubtype 2 (INPUT_TERMINAL)bTerminalID 1wTerminalType 0x0201 Camera SensorbAssocTerminal 0iTerminal 0 wObjectiveFocalLengthMin 0wObjectiveFocalLengthMax 0wOcularFocalLength 0bControlSize 3bmControls 0x00020a2eAuto-Exposure ModeAuto-Exposure PriorityExposure Time (Absolute)Focus (Absolute)Zoom (Absolute)PanTilt (Absolute)Focus, AutoVideoControl Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 5 (PROCESSING_UNIT)Warning: Descriptor too shortbUnitID 3bSourceID 1wMaxMultiplier 16384bControlSize 2bmControls 0x0000175bBrightnessContrastSaturationSharpnessWhite Balance TemperatureBacklight CompensationGainPower Line FrequencyWhite Balance Temperature, AutoiProcessing 0 bmVideoStandards 0x1bNoneNTSC - 525/60SECAM - 625/50NTSC - 625/50VideoControl Interface Descriptor:bLength 27bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 6guidExtensionCode {d09ee423-7811-314f-ae52-d2fb8a8d3b48}bNumControl 10bNrPins 1baSourceID( 0) 3bControlSize 2bmControls( 0) 0xffbmControls( 1) 0x03iExtension 0 VideoControl Interface Descriptor:bLength 27bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 8guidExtensionCode {e48e6769-0f41-db40-a850-7420d7d8240e}bNumControl 7bNrPins 1baSourceID( 0) 3bControlSize 2bmControls( 0) 0x3bbmControls( 1) 0x03iExtension 0 VideoControl Interface Descriptor:bLength 28bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 9guidExtensionCode {a94c5d1f-11de-8744-840d-50933c8ec8d1}bNumControl 16bNrPins 1baSourceID( 0) 8bControlSize 3bmControls( 0) 0xf3bmControls( 1) 0xffbmControls( 2) 0x03iExtension 0 VideoControl Interface Descriptor:bLength 27bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 10guidExtensionCode {1502e449-34f4-fe47-b158-0e885023e51b}bNumControl 7bNrPins 1baSourceID( 0) 9bControlSize 2bmControls( 0) 0xaabmControls( 1) 0x0fiExtension 0 VideoControl Interface Descriptor:bLength 28bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 11guidExtensionCode {212de5ff-3080-2c4e-82d9-f587d00540bd}bNumControl 3bNrPins 1baSourceID( 0) 10bControlSize 3bmControls( 0) 0x00bmControls( 1) 0x41bmControls( 2) 0x01iExtension 0 VideoControl Interface Descriptor:bLength 27bDescriptorType 36bDescriptorSubtype 6 (EXTENSION_UNIT)bUnitID 12guidExtensionCode {41769ea2-04de-e347-8b2b-f4341aff003b}bNumControl 11bNrPins 1baSourceID( 0) 3bControlSize 2bmControls( 0) 0x07bmControls( 1) 0x7fiExtension 0 VideoControl Interface Descriptor:bLength 9bDescriptorType 36bDescriptorSubtype 3 (OUTPUT_TERMINAL)bTerminalID 4wTerminalType 0x0101 USB StreamingbAssocTerminal 0bSourceID 3iTerminal 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x86 EP 6 INbmAttributes 3Transfer Type InterruptSynch Type NoneUsage Type DatawMaxPacketSize 0x0040 1x 64 bytesbInterval 8Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 0bNumEndpoints 0bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 VideoStreaming Interface Descriptor:bLength 15bDescriptorType 36bDescriptorSubtype 1 (INPUT_HEADER)bNumFormats 2wTotalLength 1873bEndPointAddress 129bmInfo 0bTerminalLink 4bStillCaptureMethod 0bTriggerSupport 0bTriggerUsage 0bControlSize 1bmaControls( 0) 27bmaControls( 1) 27VideoStreaming Interface Descriptor:bLength 27bDescriptorType 36bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)bFormatIndex 1bNumFrameDescriptors 19guidFormat {59555932-0000-1000-8000-00aa00389b71}bBitsPerPixel 16bDefaultFrameIndex 1bAspectRatioX 0bAspectRatioY 0bmInterlaceFlags 0x00Interlaced stream or variable: NoFields per frame: 2 fieldsField 1 first: NoField pattern: Field 1 onlybCopyProtect 0VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 1bmCapabilities 0x00Still image unsupportedwWidth 640wHeight 480dwMinBitRate 24576000dwMaxBitRate 147456000dwMaxVideoFrameBufferSize 614400dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 2bmCapabilities 0x00Still image unsupportedwWidth 160wHeight 120dwMinBitRate 1536000dwMaxBitRate 9216000dwMaxVideoFrameBufferSize 38400dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 3bmCapabilities 0x00Still image unsupportedwWidth 176wHeight 144dwMinBitRate 2027520dwMaxBitRate 12165120dwMaxVideoFrameBufferSize 50688dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 4bmCapabilities 0x00Still image unsupportedwWidth 320wHeight 180dwMinBitRate 4608000dwMaxBitRate 27648000dwMaxVideoFrameBufferSize 115200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 5bmCapabilities 0x00Still image unsupportedwWidth 320wHeight 240dwMinBitRate 6144000dwMaxBitRate 36864000dwMaxVideoFrameBufferSize 153600dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 6bmCapabilities 0x00Still image unsupportedwWidth 352wHeight 288dwMinBitRate 8110080dwMaxBitRate 48660480dwMaxVideoFrameBufferSize 202752dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 7bmCapabilities 0x00Still image unsupportedwWidth 424wHeight 240dwMinBitRate 8140800dwMaxBitRate 48844800dwMaxVideoFrameBufferSize 203520dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 8bmCapabilities 0x00Still image unsupportedwWidth 480wHeight 270dwMinBitRate 10368000dwMaxBitRate 62208000dwMaxVideoFrameBufferSize 259200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 9bmCapabilities 0x00Still image unsupportedwWidth 640wHeight 360dwMinBitRate 18432000dwMaxBitRate 110592000dwMaxVideoFrameBufferSize 460800dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 10bmCapabilities 0x00Still image unsupportedwWidth 800wHeight 448dwMinBitRate 28672000dwMaxBitRate 172032000dwMaxVideoFrameBufferSize 716800dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 50bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 11bmCapabilities 0x00Still image unsupportedwWidth 800wHeight 600dwMinBitRate 38400000dwMaxBitRate 184320000dwMaxVideoFrameBufferSize 960000dwDefaultFrameInterval 416666bFrameIntervalType 6dwFrameInterval( 0) 416666dwFrameInterval( 1) 500000dwFrameInterval( 2) 666666dwFrameInterval( 3) 1000000dwFrameInterval( 4) 1333333dwFrameInterval( 5) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 12bmCapabilities 0x00Still image unsupportedwWidth 848wHeight 480dwMinBitRate 32563200dwMaxBitRate 195379200dwMaxVideoFrameBufferSize 814080dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 42bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 13bmCapabilities 0x00Still image unsupportedwWidth 960wHeight 540dwMinBitRate 41472000dwMaxBitRate 124416000dwMaxVideoFrameBufferSize 1036800dwDefaultFrameInterval 666666bFrameIntervalType 4dwFrameInterval( 0) 666666dwFrameInterval( 1) 1000000dwFrameInterval( 2) 1333333dwFrameInterval( 3) 2000000VideoStreaming Interface Descriptor:bLength 42bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 14bmCapabilities 0x00Still image unsupportedwWidth 1024wHeight 576dwMinBitRate 47185920dwMaxBitRate 141557760dwMaxVideoFrameBufferSize 1179648dwDefaultFrameInterval 666666bFrameIntervalType 4dwFrameInterval( 0) 666666dwFrameInterval( 1) 1000000dwFrameInterval( 2) 1333333dwFrameInterval( 3) 2000000VideoStreaming Interface Descriptor:bLength 38bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 15bmCapabilities 0x00Still image unsupportedwWidth 1280wHeight 720dwMinBitRate 73728000dwMaxBitRate 147456000dwMaxVideoFrameBufferSize 1843200dwDefaultFrameInterval 1000000bFrameIntervalType 3dwFrameInterval( 0) 1000000dwFrameInterval( 1) 1333333dwFrameInterval( 2) 2000000VideoStreaming Interface Descriptor:bLength 34bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 16bmCapabilities 0x00Still image unsupportedwWidth 1600wHeight 896dwMinBitRate 114688000dwMaxBitRate 172032000dwMaxVideoFrameBufferSize 2867200dwDefaultFrameInterval 1333333bFrameIntervalType 2dwFrameInterval( 0) 1333333dwFrameInterval( 1) 2000000VideoStreaming Interface Descriptor:bLength 30bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 17bmCapabilities 0x00Still image unsupportedwWidth 1920wHeight 1080dwMinBitRate 165888000dwMaxBitRate 165888000dwMaxVideoFrameBufferSize 4147200dwDefaultFrameInterval 2000000bFrameIntervalType 1dwFrameInterval( 0) 2000000VideoStreaming Interface Descriptor:bLength 30bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 18bmCapabilities 0x00Still image unsupportedwWidth 2304wHeight 1296dwMinBitRate 238878720dwMaxBitRate 238878720dwMaxVideoFrameBufferSize 5971968dwDefaultFrameInterval 4999998bFrameIntervalType 1dwFrameInterval( 0) 4999998VideoStreaming Interface Descriptor:bLength 30bDescriptorType 36bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)bFrameIndex 19bmCapabilities 0x00Still image unsupportedwWidth 2304wHeight 1536dwMinBitRate 283115520dwMaxBitRate 283115520dwMaxVideoFrameBufferSize 7077888dwDefaultFrameInterval 4999998bFrameIntervalType 1dwFrameInterval( 0) 4999998VideoStreaming Interface Descriptor:bLength 6bDescriptorType 36bDescriptorSubtype 13 (COLORFORMAT)bColorPrimaries 1 (BT.709,sRGB)bTransferCharacteristics 1 (BT.709)bMatrixCoefficients 4 (SMPTE 170M (BT.601))VideoStreaming Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 6 (FORMAT_MJPEG)bFormatIndex 2bNumFrameDescriptors 17bFlags 1Fixed-size samples: YesbDefaultFrameIndex 1bAspectRatioX 0bAspectRatioY 0bmInterlaceFlags 0x00Interlaced stream or variable: NoFields per frame: 1 fieldsField 1 first: NoField pattern: Field 1 onlybCopyProtect 0VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 1bmCapabilities 0x00Still image unsupportedwWidth 640wHeight 480dwMinBitRate 24576000dwMaxBitRate 147456000dwMaxVideoFrameBufferSize 614400dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 2bmCapabilities 0x00Still image unsupportedwWidth 160wHeight 120dwMinBitRate 1536000dwMaxBitRate 9216000dwMaxVideoFrameBufferSize 38400dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 3bmCapabilities 0x00Still image unsupportedwWidth 176wHeight 144dwMinBitRate 2027520dwMaxBitRate 12165120dwMaxVideoFrameBufferSize 50688dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 4bmCapabilities 0x00Still image unsupportedwWidth 320wHeight 180dwMinBitRate 4608000dwMaxBitRate 27648000dwMaxVideoFrameBufferSize 115200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 5bmCapabilities 0x00Still image unsupportedwWidth 320wHeight 240dwMinBitRate 6144000dwMaxBitRate 36864000dwMaxVideoFrameBufferSize 153600dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 6bmCapabilities 0x00Still image unsupportedwWidth 352wHeight 288dwMinBitRate 8110080dwMaxBitRate 48660480dwMaxVideoFrameBufferSize 202752dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 7bmCapabilities 0x00Still image unsupportedwWidth 424wHeight 240dwMinBitRate 8140800dwMaxBitRate 48844800dwMaxVideoFrameBufferSize 203520dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 8bmCapabilities 0x00Still image unsupportedwWidth 480wHeight 270dwMinBitRate 10368000dwMaxBitRate 62208000dwMaxVideoFrameBufferSize 259200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 9bmCapabilities 0x00Still image unsupportedwWidth 640wHeight 360dwMinBitRate 18432000dwMaxBitRate 110592000dwMaxVideoFrameBufferSize 460800dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 10bmCapabilities 0x00Still image unsupportedwWidth 800wHeight 448dwMinBitRate 28672000dwMaxBitRate 172032000dwMaxVideoFrameBufferSize 716800dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 11bmCapabilities 0x00Still image unsupportedwWidth 800wHeight 600dwMinBitRate 38400000dwMaxBitRate 230400000dwMaxVideoFrameBufferSize 960000dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 12bmCapabilities 0x00Still image unsupportedwWidth 848wHeight 480dwMinBitRate 32563200dwMaxBitRate 195379200dwMaxVideoFrameBufferSize 814080dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 13bmCapabilities 0x00Still image unsupportedwWidth 960wHeight 540dwMinBitRate 41472000dwMaxBitRate 248832000dwMaxVideoFrameBufferSize 1036800dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 14bmCapabilities 0x00Still image unsupportedwWidth 1024wHeight 576dwMinBitRate 47185920dwMaxBitRate 283115520dwMaxVideoFrameBufferSize 1179648dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 15bmCapabilities 0x00Still image unsupportedwWidth 1280wHeight 720dwMinBitRate 73728000dwMaxBitRate 442368000dwMaxVideoFrameBufferSize 1843200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 16bmCapabilities 0x00Still image unsupportedwWidth 1600wHeight 896dwMinBitRate 114688000dwMaxBitRate 688128000dwMaxVideoFrameBufferSize 2867200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 54bDescriptorType 36bDescriptorSubtype 7 (FRAME_MJPEG)bFrameIndex 17bmCapabilities 0x00Still image unsupportedwWidth 1920wHeight 1080dwMinBitRate 165888000dwMaxBitRate 995328000dwMaxVideoFrameBufferSize 4147200dwDefaultFrameInterval 333333bFrameIntervalType 7dwFrameInterval( 0) 333333dwFrameInterval( 1) 416666dwFrameInterval( 2) 500000dwFrameInterval( 3) 666666dwFrameInterval( 4) 1000000dwFrameInterval( 5) 1333333dwFrameInterval( 6) 2000000VideoStreaming Interface Descriptor:bLength 6bDescriptorType 36bDescriptorSubtype 13 (COLORFORMAT)bColorPrimaries 1 (BT.709,sRGB)bTransferCharacteristics 1 (BT.709)bMatrixCoefficients 4 (SMPTE 170M (BT.601))Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 1bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x00c0 1x 192 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 2bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0180 1x 384 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 3bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0200 1x 512 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 4bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0280 1x 640 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 5bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0320 1x 800 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 6bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x03b0 1x 944 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 7bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0a80 2x 640 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 8bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0b20 2x 800 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 9bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0be0 2x 992 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 10bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x1380 3x 896 bytesbInterval 1Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 1bAlternateSetting 11bNumEndpoints 1bInterfaceClass 14 VideobInterfaceSubClass 2 Video StreamingbInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:bLength 7bDescriptorType 5bEndpointAddress 0x81 EP 1 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x1400 3x 1024 bytesbInterval 1Interface Association:bLength 8bDescriptorType 11bFirstInterface 2bInterfaceCount 2bFunctionClass 1 AudiobFunctionSubClass 2 StreamingbFunctionProtocol 0 iFunction 0 Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 2bAlternateSetting 0bNumEndpoints 0bInterfaceClass 1 AudiobInterfaceSubClass 1 Control DevicebInterfaceProtocol 0 iInterface 0 AudioControl Interface Descriptor:bLength 9bDescriptorType 36bDescriptorSubtype 1 (HEADER)bcdADC 1.00wTotalLength 38bInCollection 1baInterfaceNr( 0) 3AudioControl Interface Descriptor:bLength 12bDescriptorType 36bDescriptorSubtype 2 (INPUT_TERMINAL)bTerminalID 1wTerminalType 0x0201 MicrophonebAssocTerminal 0bNrChannels 1wChannelConfig 0x0003Left Front (L)Right Front (R)iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor:bLength 9bDescriptorType 36bDescriptorSubtype 3 (OUTPUT_TERMINAL)bTerminalID 3wTerminalType 0x0101 USB StreamingbAssocTerminal 0bSourceID 5iTerminal 0 AudioControl Interface Descriptor:bLength 8bDescriptorType 36bDescriptorSubtype 6 (FEATURE_UNIT)bUnitID 5bSourceID 1bControlSize 1bmaControls( 0) 0x03Mute ControlVolume ControliFeature 0 Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 3bAlternateSetting 0bNumEndpoints 0bInterfaceClass 1 AudiobInterfaceSubClass 2 StreamingbInterfaceProtocol 0 iInterface 0 Interface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 3bAlternateSetting 1bNumEndpoints 1bInterfaceClass 1 AudiobInterfaceSubClass 2 StreamingbInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor:bLength 7bDescriptorType 36bDescriptorSubtype 1 (AS_GENERAL)bTerminalLink 3bDelay 1 frameswFormatTag 1 PCMAudioStreaming Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 2 (FORMAT_TYPE)bFormatType 1 (FORMAT_TYPE_I)bNrChannels 2bSubframeSize 2bBitResolution 16bSamFreqType 1 DiscretetSamFreq[ 0] 16000Endpoint Descriptor:bLength 9bDescriptorType 5bEndpointAddress 0x83 EP 3 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0044 1x 68 bytesbInterval 4bRefresh 0bSynchAddress 0AudioControl Endpoint Descriptor:bLength 7bDescriptorType 37bDescriptorSubtype 1 (EP_GENERAL)bmAttributes 0x01Sampling FrequencybLockDelayUnits 0 UndefinedwLockDelay 0 UndefinedInterface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 3bAlternateSetting 2bNumEndpoints 1bInterfaceClass 1 AudiobInterfaceSubClass 2 StreamingbInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor:bLength 7bDescriptorType 36bDescriptorSubtype 1 (AS_GENERAL)bTerminalLink 3bDelay 1 frameswFormatTag 1 PCMAudioStreaming Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 2 (FORMAT_TYPE)bFormatType 1 (FORMAT_TYPE_I)bNrChannels 2bSubframeSize 2bBitResolution 16bSamFreqType 1 DiscretetSamFreq[ 0] 24000Endpoint Descriptor:bLength 9bDescriptorType 5bEndpointAddress 0x83 EP 3 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0064 1x 100 bytesbInterval 4bRefresh 0bSynchAddress 0AudioControl Endpoint Descriptor:bLength 7bDescriptorType 37bDescriptorSubtype 1 (EP_GENERAL)bmAttributes 0x01Sampling FrequencybLockDelayUnits 0 UndefinedwLockDelay 0 UndefinedInterface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 3bAlternateSetting 3bNumEndpoints 1bInterfaceClass 1 AudiobInterfaceSubClass 2 StreamingbInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor:bLength 7bDescriptorType 36bDescriptorSubtype 1 (AS_GENERAL)bTerminalLink 3bDelay 1 frameswFormatTag 1 PCMAudioStreaming Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 2 (FORMAT_TYPE)bFormatType 1 (FORMAT_TYPE_I)bNrChannels 2bSubframeSize 2bBitResolution 16bSamFreqType 1 DiscretetSamFreq[ 0] 32000Endpoint Descriptor:bLength 9bDescriptorType 5bEndpointAddress 0x83 EP 3 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x0084 1x 132 bytesbInterval 4bRefresh 0bSynchAddress 0AudioControl Endpoint Descriptor:bLength 7bDescriptorType 37bDescriptorSubtype 1 (EP_GENERAL)bmAttributes 0x01Sampling FrequencybLockDelayUnits 0 UndefinedwLockDelay 0 UndefinedInterface Descriptor:bLength 9bDescriptorType 4bInterfaceNumber 3bAlternateSetting 4bNumEndpoints 1bInterfaceClass 1 AudiobInterfaceSubClass 2 StreamingbInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor:bLength 7bDescriptorType 36bDescriptorSubtype 1 (AS_GENERAL)bTerminalLink 3bDelay 1 frameswFormatTag 1 PCMAudioStreaming Interface Descriptor:bLength 11bDescriptorType 36bDescriptorSubtype 2 (FORMAT_TYPE)bFormatType 1 (FORMAT_TYPE_I)bNrChannels 2bSubframeSize 2bBitResolution 16bSamFreqType 1 DiscretetSamFreq[ 0] 48000Endpoint Descriptor:bLength 9bDescriptorType 5bEndpointAddress 0x83 EP 3 INbmAttributes 5Transfer Type IsochronousSynch Type AsynchronousUsage Type DatawMaxPacketSize 0x00c4 1x 196 bytesbInterval 4bRefresh 0bSynchAddress 0AudioControl Endpoint Descriptor:bLength 7bDescriptorType 37bDescriptorSubtype 1 (EP_GENERAL)bmAttributes 0x01Sampling FrequencybLockDelayUnits 0 UndefinedwLockDelay 0 Undefined Device Qualifier (for other device speed):bLength 10bDescriptorType 6bcdUSB 2.00bDeviceClass 239 Miscellaneous DevicebDeviceSubClass 2 ?bDeviceProtocol 1 Interface AssociationbMaxPacketSize0 64bNumConfigurations 1 Device Status: 0x0000(Bus Powered)

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