English to Chinese Tech/Engineering IT (Information Technology) virtualization server

The system's three PCI Express x8 slots are delivered via a riser card, which can sometimes be tricky to work with, particularly in the cramped quarters of a server room that are often poorly lit. But a clever design allows the riser card and its assembly to be removed with a pair of captive thumbscrews. Option cards can be installed and affixed to the assembly ***in the comfort of anywhere that's not the server room*** and then re-installed into the server.
系统的三个PCI Express x8插槽通过一块转接卡来提供，转接卡有时很难对付，尤其是在常常光线欠佳的服务器机房的狭窄空间下。但是巧妙的设计让转接卡及其部件只需借助一对captive thumbscrews就可以取下来。选件卡可以***轻松地安装、添加到任何外置部件上***，然后重新安装到服务器上。
谢谢改正！