Identifying Connectors; System-Board Connectors For Cable Routing; 2.5-Inch Drive Backplane Connectors - Lenovo ThinkSystem SD550 V3 User Manual

Identifying connectors

See this section to locate and identify the connectors on the electric boards.

System-board connectors for cable routing

See this section to locate and identify the connectors on the system board that are used for internal cable
routing.
Rear I/O signal connector
1
OCP signal connector
2
PCIe riser slot 2 connector (Gen5)
3
RAID signal connector
4
OCP power and sideband connector
5
RAID power connector
6
Backplane power connector
7

2.5-inch drive backplane connectors

See this section to locate and identify the connectors on the 2.5-inch drive backplane that are used for
internal cable routing .
Figure 136. 2.5-inch drive backplane
ThinkSystem SD550 V3 User Guide
212
PCIe riser power connector
8
P12V AUX power connector
9
Node sideband connector
10
PCIe riser slot 1 connector (Gen4)
11
NVMe 0-1 connector (Gen5)
12
SATA connector
13
NVMe 2-5 connector (Gen5) or PCIe riser slot 2
14
connector (Gen5), depending on the configuration