HP Compaq Presario,Presario V4000 Maintenance And Service Manual page 170

Removal and Replacement Procedures
✎
Steps 11 through 18 provide instructions for removing the USB
board and frame on HP Pavilion dv4000 models. Refer to
Section 5.21, "USB Board,"
USB board and frame on Compaq Presario V4000 models.
11. Disconnect the audio 1, USB 2, and Bluetooth cables 3
from the system board.
Disconnecting the Audio, USB, and Bluetooth Module Cables,
HP Pavilion dv4000 Models
5–66
for instructions on removing the
Maintenance and Service Guide