从2.4版本的内核开始，对于设备的Hotplug(热插拔)支持已经成了Linux的一个标准特性。
Hotplug support for devices became a standard feature on Linux starting with the kernel 2.4.
SFP模块还支持热插拔功能，即无需切断电源，模块即可以与设备连接或断开。
The SFP module also supports pluggable function which means the module can be connected or disconnected to the equipment without cutting off the power supply.
SFP模块还支持热插拔功能，即无需切断电源，模块即可以与设备连接或断开。
The SFP module also supports pluggable function which means the module can be connected or disconnected to the equipment without cutting off the power supply.
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