Lenovo THINKSERVER 3797 - Manual (Page 160)

4 Video connector
5 Ethernet connector 2
6 Ethernet connector 1
7 Systems management Ethernet connector
System-board switches and jumpers
Any switches or jumpers on the system board that are not shown in the illustration
are reserved. See the section about recovering the unified extensible firmware
interface (UEFI) code in the Hardware Maintenance Manual for information about
using the UEFI boot recovery jumper.
The following illustration shows the switches and jumpers on the system board.
Table 5. Callout descriptions
Jumper name Jumper setting
152 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual