H3C Technologies H3C S5120 Series Switches - Manual (Page 62)

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(2) Grounding/pole detection LED
(red) On indicates a wrong wire connection (the wire is not grounded or the live
line and null line are reversely connected), and you need to check the
power supply line.
(3) Power switch
(4) IEC standard socket
It is used to connect to the power supply in the equipment room through a
power cord.
(5) Overload automatic protector It can reset automatically.
(6) Multifunctional socket
It is used to connect the power module of the device.
NOTE:
•
Lightning arrester will not be shipped with the switch. Purchase it by yourself if needed.
• If an outdoor AC power cord must be directly led to the switch, please serially connect the lightning
arrester for AC power (Socket Strip with Lightning Protection) before you plug AC power cord into the
switch, thus to prevent the possible damage to the switch due to lightning strike. You can use cable clips
and screws to fasten the lightning arrester for AC power on the cabinet, workbench or the wall of
equipment room.