Fujitsu PRIMERGY RX2540 M7 Upgrade And Maintenance Manual page 128

Power supply unit (PSU)
Installing a hot-plug PSU
Figure 47: Installing a hot-pug PSU
▶ Push the PSU into its bay as far as it will go (1) until the release latch (A)
snaps in place.
▶ Fold down the handle on the PSU (2).
Ensure that the PSU engages correctly in the bay and is locked in
position.
128 Upgrade and Maintenance Manual RX2540 M7