•  “Set the network connection for the Lenovo XClarity Controller” on page 55
•  “XCC system management port LEDs” on page 37
22  External diagnostics handset connector
Connect the external diagnostics handset to this connector. See “External diagnostics handset” in 
ThinkSystem SR950 V3 User Guide or ThinkSystem SR950 V3 Hardware Maintenance Guide for more details.
Rear view
The rear of the server provides access to several components, including the power supplies, PCIe adapters, 
serial port, and Ethernet port.
Note: Depending on the configuration, your server might be slightly different from the image.
Figure 5. Rear view
Table 3.  Components on the rear view
1  PCIe slot S5 8  PCIe slot P7
2  PCIe slot S6 9  PSU P4-P6 (top to bottom)
3  PSU S1-S3 (top to bottom) 10  PSU P1-P3 (top to bottom)
4  PSU S4-S6 (top to bottom) 11  OCP slot
5  PCIe slot S7 12  PCIe slot P6
6  PCIe slot S8 13  PCIe slot P5/XCC system management port
7  PCIe slot P8
1  /  2  /  5  /  6  PCIe slot S5-S8
Install PCIe adapters into these PCIe slots. See “Install a PCIe adapter” in ThinkSystem SR950 V3 User 
Guide or ThinkSystem SR950 V3 Hardware Maintenance Guide.
Chapter 2. Server components 17