esxi.主機(jī)配置上聯(lián)端口

With USB 3.0 becoming more prevalent with each passing year now, you may have found yourself wondering why modern computers still have USB 2.0 ports built into them. With that in mind, today’s SuperUser Q&A post has the answers to a curious reader’s question.

隨著USB 3.0的普及與普及，您可能會(huì)想知道為什么現(xiàn)代計(jì)算機(jī)仍內(nèi)置有USB 2.0端口。 考慮到這一點(diǎn)，今天的SuperUser Q＆A帖子回答了一個(gè)好奇的讀者的問題。

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“問答”環(huán)節(jié)由SuperUser提供，它是Stack Exchange的一個(gè)分支，該社區(qū)是由社區(qū)驅(qū)動(dòng)的Q＆A網(wǎng)站分組。

問題 (The Question)

SuperUser reader Brettetete wants to know why modern computer cases still have USB 2.0 ports:

超級(jí)用戶閱讀器Brettetete想知道為什么現(xiàn)代的計(jì)算機(jī)機(jī)箱仍然具有USB 2.0端口：

I am currently planning out the setup for a new computer. As I was browsing through computer cases online, I realized that modern computer cases always seem to have USB 2.0 and 3.0 ports built into the front panel.

我目前正在計(jì)劃新計(jì)算機(jī)的安裝程序。 當(dāng)我在線瀏覽計(jì)算機(jī)機(jī)箱時(shí)，我意識(shí)到現(xiàn)代計(jì)算機(jī)機(jī)箱似乎總是在前面板中內(nèi)置USB 2.0和3.0端口。

Is there a legitimate reason to have or use USB 2.0 ports on modern computer cases? As far as I know, USB 3.0 has backward compatibility. This screenshot is a perfect example of a computer case with both types of USB ports built into it (from YouTube):

在現(xiàn)代電腦機(jī)箱中是否有合理的理由擁有或使用USB 2.0端口？ 據(jù)我所知，USB 3.0具有向后兼容性。 此屏幕快照是其中內(nèi)置有兩種USB端口的計(jì)算機(jī)機(jī)箱的完美示例(來自YouTube )：

Why do modern computer cases still have USB 2.0 ports?

為什么現(xiàn)代的計(jì)算機(jī)機(jī)箱仍然具有USB 2.0端口？

答案 (The Answer)

SuperUser contributors Kamen Minkov, Patrick Bell, and “the original mike western” have the answer for us. First up, Kamen Minkov:

超級(jí)用戶貢獻(xiàn)者Kamen Minkov，Patrick Bell和“原始的Mike West”為我們找到了答案。 首先，Kamen Minkov：

USB 3.0 does have backwards compatibility, but if you happen to buy a motherboard that does not have a USB 3.0 header connection, you are left without any front panel USB ports at all. That is one possible explanation.

USB 3.0確實(shí)具有向后兼容性，但是如果您購(gòu)買的主板沒有USB 3.0接頭連接器，則根本沒有任何前面板USB端口。 那是一種可能的解釋。

Followed by the answer from Patrick Bell:

隨后是Patrick Bell的回答：

Nobody has mentioned this yet, but USB 3.0 ports can cause issues with certain installation media (like Windows 7, for example) where only USB 2.0 drivers are provided on the installation media.

尚未有人提及，但是USB 3.0端口可能會(huì)導(dǎo)致某些安裝介質(zhì)(例如Windows 7)出現(xiàn)問題，其中安裝介質(zhì)上僅提供USB 2.0驅(qū)動(dòng)程序。

And our final answer from “the original mike western”:

我們從“原始的西方麥克”中得到的最終答案是：

USB 2.0 ports are handy for keyboards, mouse controllers, and other non-drive uses. Because these devices do not need the speedy throughput, a keyboard or mouse connected to a USB 3.0 port would be a waste of the resource.

USB 2.0端口非常適合鍵盤，鼠標(biāo)控制器和其他非驅(qū)動(dòng)器使用。 由于這些設(shè)備不需要快速的吞吐量，因此，連接到USB 3.0端口的鍵盤或鼠標(biāo)會(huì)浪費(fèi)資源。

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Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.

有什么補(bǔ)充說明嗎？ 在評(píng)論中聽起來不錯(cuò)。 是否想從其他精通Stack Exchange的用戶那里獲得更多答案？ 在此處查看完整的討論線程。

Image Credit: be quiet! Silent Base 600 Case Review (YouTube)

圖片來源：保持安靜！ Silent Base 600 Case Review(YouTube)

翻譯自: https://www.howtogeek.com/267385/why-do-modern-computer-cases-still-have-usb-2.0-ports/

esxi.主機(jī)配置上聯(lián)端口

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