IBM System x3500 M2 Type 7839 - System-Board External Connectors; SAS Backplane Connectors

System-board external connectors
The following illustration shows the external input/output connectors and the NMI
button on the system board.
SAS backplane connectors
The following illustration shows the connectors on the SAS backplanes.
Figure 1. 2.5-inch backplane connectors
26 IBM System x3500 M2 Type 7839: Installation and User’s Guide