HP DC7800 - Manual (Page 182)

Cable Connections
System board connectors are color-coded to make it easier to find the proper connection.
System Board Connections
System Board Connector Description
Optical data/power P21, SECONDARY
Front Chassis fan P8, CHFAN1
Rear chassis fan P9, CHFAN2
Speaker P6, SPKR
Hood sensor P125, HSENSE
Optical Drive
An optical drive is a DVD-ROM drive, a DVD/CD-RW Combo drive, or a SuperMulti LightScribe drive.
Removing the Optical Drive
1. Prepare the computer for disassembly ( Preparation for Disassembly on page 159 ).
2. Remove the computer access panel ( Computer Access Panel on page 163 ).
3. Push the green release latch on the right rear side of the optical drive toward the center of the
optical drive (1), slide the optical drive forward approximately 6 mm (1/4 inch) (2), and then
disconnect the cable on the rear of the drive (3).
170 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis