Lenovo ThinkServer RD550 - Manual (Page 50)

Backplane for twelve 2.5-inch drives
The following illustrations show the slots and connectors on the backplane for up to twelve 2.5-inch drives.
Figure 21. Front view of the backplane for 2.5-inch drives
Figure 22. Rear view of the backplane for 2.5-inch drives
0 - 11 : Slot 0-slot 11
Used to connect 2.5-inch drives.
12 PCIe signal connectors
Used to connect the signal cable for the PCIe interposer card.
13 10-pin power connector
Used to connect to the front-backplane power connector on the system board to provide power to the
backplane.
14 AnyRAID adapter slot (2)
Used to connect to an AnyRAID adapter.
36 ThinkServer RD550 User Guide and Hardware Maintenance Manual