HP Vectra VEC 7 Hardware Manual page 22

Vectra VE 7 (Celeron Processor) — Replacing Hardware Components
Installing a CD-ROM, Tape or Zip Drive in a Front Shelf
6 Slide the drive completely into the shelf, and secure the drive in
position using the screws provided with it.
7 Connect the power and data cables to the rear of the device (the
connectors are shaped to go in one way only).
If a CD-ROM drive is installed, connect the sound cable between the
CD-ROM drive and the CD audio connector on the sound board.
Refer to "Which Drive Connectors to Use" for more information
about which connectors to use.
22 English
Power cable
CD-ROM data
cable