Lenovo THINKSERVER 3821 - Manual (Page 141)

System-board external connectors
The following illustration shows the external input/output connectors and the NMI
button on the system board.
1 Video port
2 Serial port
3 10/100m RJ45 LAN connector
4 NMI button
5 USB ports
6 GbE RJ45 LAN connectors
System-board switches and jumpers
The following illustration shows the SW6 switch and the jumpers on the system
board. See the tables below the illustration for information about the switch settings.
Chapter 6. Locating Server Controls and connectors 133