Dell POWEREDGE R710 - Manual (Page 183)

Jumpers and Connectors
183
Figure 6-4. SAS Backplane Board for 3.5-Inch Hard Drives (4 Slots)
1 drive 0 – drive 3 connectors 2 drive 4– drive 7 connectors
3 backplane power (BKPLN) 4 SAS A connector
5 SAS B connector
1 drive 1 connector 2 drive 0 connector
3 drive 3 connector 4 drive 2 connector
5 backplane power (BP_PWR) 6 SAS A connector
3
6
front
2 1 4
back
5