Lenovo THINKSERVER 3821 - Manual (Page 138)

Rear view
The following illustration shows the connectors and LEDs on the rear of the server.
1 USB 1 7 Power-error LED
2 USB 2 8 dc-power LED
3 USB 3 9 ac-power LED
4 USB 4 10 Video connector
5 Ethernet 10/100/1000 11 Serial 1 (COM 1)
6 Power-cord connector 12 Systems-management connector
USB 1-4 connectors: Connect a USB device, such as USB mouse or keyboard, to
any of these connectors.
Ethernet 10/100/1000 connector: Use these connectors to connect the server to a
network.
Power-cord connector: Connect the power cord to this connector.
Power-error LED: When the power-error LED is lit, it indicates that the power
supply has failed.
dc-power LED: Each hot-swap power supply has a dc-power LED and an
ac-power LED. When the dc-power LED is lit, it indicates that the power supply is
supplying adequate dc power to the system. During typical operation, both the ac
and dc-power LEDs are lit. For any other combination of LEDs, see “Power-supply
LEDs” on page 139.
130 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual