HP rp5800 Reference Manual page 53

2. Disconnect the power cable (1) and data cable (2) from the back of the hard drive.
Figure 2-53
3. Press down on the green drive retainer button located on the left side of the drive to disengage
the drive from the drive cage (1). While pressing the drive retainer button, slide the drive back
until it stops, then lift it up and out of the drive cage (2).
Figure 2-54
ENWW
Disconnecting the Secondary Hard Drive Power and Data Cables
Removing a Secondary Hard Drive
Installing and Removing Drives 47