2-15
Cisco UCS C22 Server Installation and Service Guide
OL-26646-01
Chapter2 Installing the Server
Service Headers and Jumpers
Service Headers and Jumpers
This section includes the following topics:
•Header Location on the Motherboard, page 2-15
•Using the BIOS Recovery Header CN34, page 2-16

Header Location on the Motherboard

See Figure 2-6. The header is shown in red on the motherboard, with PCIe riser 2 removed. The header
pins are shown in the magnified view.
Figure2-6 Service Header Locations
1CN34 BIOS Recovery –
PCIe 1
SYS FAN2SYS FAN2
SYS FAN3SYS FAN3
SYS FAN4SYS FAN4
SYS FAN5SYS FAN5
SYS FAN6SYS FAN6
SYS FAN1
SYS FAN2
SYS FAN3
SYS FAN4
CPU 1
CPU 2
SYS FAN5
333942
2
321
1
321