NEC Express5800 User Manual page 343

Upgrading Your Server 9-53
6.
Fasten the two screws removed in step 5 to the right side of the device file.
Dedicated screws
NOTE:
When installing the N8151-59/76/90/101/102, insert the device
plates supplied with the server on the right side of the device and
attach the device to the server using the supplied screws.
Install the device plates so that the round hole is at the front and
slotted hole is at the back.