IBM x3690 X5 Service Manual page 339

Note: The flash power module does not require a retention clip to hold the
flash power module in place.
Flash power
module tray
c. Reconnect the extension cable to the flash power module.
4. Ensure that the flash power module cable is routed in the server as shown in
the following illustrations (depending on the PCI slot in which the RAID
adapter is installed).
Attention: Make sure that the cable is not pinched and does not cover any
connectors or obstruct any components on the system board.
Flash power
module
Chapter 5. Removing and replacing components
321