These systems are hardware or software devices that can help you monitor access across the network to and from your server as well as activity on the server itself.
Servers with IPMI functionality let network administrators access and monitor server hardware, and diagnose and restore a frozen server to normal operations.
具有IPMI功能的服务器让网管员访问和监视服务器硬件，对冻结的服务器进行诊断和恢复正常运转。
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It is possible to damage your monitor or video card by selecting a timing range outside the capabilities of your hardware.