NEC Express5800/R120b-1 User Manual page 367

7.
Push the drive carrier into the slot until it stops.
IMPORTANT:
Confirm that the handle is hooked to the frame when having inserted the hard disk
drive.
Be careful not to get your finger caught between the handle and tray.
NOTE:
The hard disk drive bay is located close to the POWER switch.
Pay attention not to press the POWER switch when installing/removing
the hard disk drive. If the POWER switch is pressed by mistake, the
system starts shutdown process.
8.
Slowly close the handle.
The drive carrier is locked when a "click" is heard.
IMPORTANT:
Be careful not to get your finger caught between the handle and tray.
Push the drive further to check if it is firmly secured.
Upgrading Your Server 9-11