System-Board Layout; System-Board Connectors - Lenovo ThinkEdge SE455 V3 User Manual

Figure 6. Top view: bottom layer
Table 10. Components on the top view: bottom layer
Fan control board (FCB)
1
RAID flash power module holder
2
Note: RAID flash power module (supercap) is an optional
part installed in the holder.
Power distribution board (PDB)
3
Firmware and RoT security module
4
OCP 3.0 module
5

System-board layout

The illustrations in this section provide information about the connectors, switches, and jumpers that are
available on the system board.
For more information about the LEDs that are available on the system board, see
page 275.

System-board connectors

The following illustrations show the internal connectors on the system board.
24 ThinkEdge SE455 V3 User Guide
Memory module slots (DIMM 1-3, right to left)
6
Memory module slots (DIMM 4-6, right to left)
7
Processor
8
(Optional) Air flow sensor board
9
"System-board LEDs" on