HP Vectra VL series 8 Maintenance Manual page 23

3 At the rear of the computer, unscrew the retaining bracket (you can
use a coin to do this) and remove it.
4 Remove the rear tray by sliding it forward about 1.5 cm (
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.
1 How to Install Accessories In Your PC
Installing Mass Storage Devices
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inch) and
English 13