HP Armada 7300 Reference Manual page 62

Inserting a Drive into the MultiBay Adapter
That Has One Release Latch
To insert a CD-ROM drive or diskette drive into the Armada 7000
Removable Drive MultiBay Adapter that has one release latch on
the right side:
1. Hold the drive with the connector on the right facing the front
of the adapter.
2. Slide the drive into the adapter until the front of the drive is
flush with the front of the adapter.
Inserting a Drive into the a MultiBay Adapter That Has One Release Latch
6-12 Working with Removable Drives