Chapter 6. Internal cable routingSee this section to do cable routing for specific components.To connect cables, observe the following guidelines:• Turn off the server before you connect or disconnect any internal cables.• See the documentation that comes with any external devices for additional cabling instructions. It mightbe easier for you to route cables before you connect the devices to the server.• Cable identifiers of some cables are printed on the cables that come with the server and optional devices.Use these identifiers to connect the cables to the correct connectors.• Ensure that the cable is not pinched and does not cover any connectors or obstruct any components onthe system board assembly.• Ensure that the relevant cables pass through the cable clips.Note: Disengage all latches, release tabs, or locks on cable connectors when you disconnect cables fromthe system board assembly. Failing to release them before removing the cables will damage the cablesockets on the system board assembly, which are fragile. Any damage to the cable sockets might requirereplacing the processor board or system I/O board.Identifying connectorsSee this section to locate and identify the connectors on the electric boards.• “Drive backplane connectors” on page 167For the connectors on system board assembly, see “System-board-assembly connectors” on page 21.Drive backplane connectorsSee this section to locate the connectors in the drive backplanes.The server supports the following backplanes depending on server configurations:• “8 x 2.5-inch SAS/SATA front backplane” on page 167• “8 x 2.5-inch AnyBay front backplane” on page 168• “12 x 3.5-inch SAS/SATA front backplane” on page 168• “4 x 2.5-inch SAS/SATA middle/rear backplane” on page 1698 x 2.5-inch SAS/SATA front backplaneSee this section to locate the connectors on the drive backplane.© Copyright Lenovo 2022 167