Callout Callout
17  Power supply 2 connector
18  Internal USB connector
19  Power supply 1 connector
20  SATA 4-7 connector
21  SATA 0-3 connector
22  M.2 module slot
23  Riser 2 slot 
Notes: 
• 
1 
Trusted Cryptography Module
• 
2 
Trusted Platform Module
Internal cable routing
Some of the components in the server have internal cables and cable connectors.
To connect cables, observe the following guidelines: 
•  Power 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 might 
be 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 relevant cables pass through the cable clips. 
Figure 14. Cable clips
28 ThinkSystem SR550 Setup Guide