NEC Express5800 User Manual page 271

11.
Align the screw holes of the hard disk drive with those of the hard disk drive bay and
secure the hard disk drive with the screws (4) provided with the hard disk drive.
IMPORTANT:
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.
First disk
Second disk
Use the screws provided with the hard disk drive. If
Third disk
Upgrading Your Server 9-15
Screws (on both sides)