Dell POWEREDGE R710 - Manual (Page 184)

184
Jumpers and Connectors
Figure 6-5. SAS Backplane Board for 3.5-Inch Hard Drives (6 Slots)
1 drive 1 connector 2 drive 0 connector
3 drive 3 connector 4 drive 2 connector
5 drive 5 connector 6 drive 4 connector
7 backplane power (BP_PWR) 8 SAS A connector
9 SAS B connector
9
front
back
3 2 1 4 5 6
8 7