HP 6 - Manual (Page 42)

2 How to Install Accessories In Your PC
Installing Mass Storage Devices
30 English
4 Remove the rear tray by sliding it forward about 1.5 cm ( ½ inch) and
lifting it up and out.
5 Align the disk drive with the holes in the tray, making sure that the
drive connectors are on the open end of the tray. Then secure the
drive using the screws provided with it.
6 Carefully lower the tray back into position by aligning the metal tabs,
then slide it backwards into place.
7 At the rear of the PC, replace the retainer bracket and screw it in
place, securing the tray.