HPE ProLiant DL345 Gen11 Service And Maintenance Manual page 189

On top of the power supply cage
11. Remove the boot device carrier:
a. Press and hold the carrier latch (callout 1).
b. Pivot the latch to open (callouts 2).
c. Slide the carrier out from the boot device cage (callout 3).
HPE ProLiant DL345 Gen11 Server Service and Maintenance Guide 189