NEC Express5800 User Manual page 311

7.
Hold the 2.5-inch hard disk drive with the connector side facing toward you and the board
side facing downward and then insert the hard disk drive into the slot slowly and gently.
IMPORTANT: Use the screws provided with the hard disk drive. If not,
use the screws provided with the server to secure it. Using screws
longer than the required length may cause the hard disk drive to be
damaged.
8.
Align the guide on the chassis then, insert the hard disk drive cage into the server
carefully.
Upgrading Your Server 9-21