esxi.主机配置上联端口
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.
随着USB 3.0的普及与普及，您可能会想知道为什么现代计算机仍内置有USB 2.0端口。 考虑到这一点，今天的SuperUser Q＆A帖子回答了一个好奇的读者的问题。
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“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。
问题 (The Question)
SuperUser reader Brettetete wants to know why modern computer cases still have USB 2.0 ports:
超级用户阅读器Brettetete想知道为什么现代的计算机机箱仍然具有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.
我目前正在计划新计算机的安装程序。 当我在线浏览计算机机箱时，我意识到现代计算机机箱似乎总是在前面板中内置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):
在现代电脑机箱中是否有合理的理由拥有或使用USB 2.0端口？ 据我所知，USB 3.0具有向后兼容性。 此屏幕快照是其中内置有两种USB端口的计算机机箱的完美示例(来自YouTube )：
Why do modern computer cases still have USB 2.0 ports?
为什么现代的计算机机箱仍然具有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:
超级用户贡献者Kamen Minkov，Patrick Bell和“原始的Mike West”为我们找到了答案。 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确实具有向后兼容性，但是如果您购买的主板没有USB 3.0接头连接器，则根本没有任何前面板USB端口。 那是一种可能的解释。
Followed by the answer from Patrick Bell:
随后是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端口可能会导致某些安装介质(例如Windows 7)出现问题，其中安装介质上仅提供USB 2.0驱动程序。
And our final answer from “the original mike western”:
我们从“原始的西方麦克”中得到的最终答案是：
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端口非常适合键盘，鼠标控制器和其他非驱动器使用。 由于这些设备不需要快速的吞吐量，因此，连接到USB 3.0端口的键盘或鼠标会浪费资源。
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.
有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程。
Image Credit: be quiet! Silent Base 600 Case Review (YouTube)
图片来源：保持安静！ Silent Base 600 Case Review(YouTube)
翻译自: https://www.howtogeek.com/267385/why-do-modern-computer-cases-still-have-usb-2.0-ports/
esxi.主机配置上联端口
