HP ProBook 4430s, 4431s, 4330s and 4331s Notebook PCs - Maintenance and Service Guide

Remove the processor:
1. Position the computer upside-down with the front toward you.
2. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn
counterclockwise until you hear a click.
3. Lift the processor (2) straight up and remove it.
NOTE: The gold triangle (3) on the processor must be aligned with the triangle (4) embossed
on the processor slot when you install the processor.
Reverse this procedure to install the processor.
Top cover
Description Spare part number
For use in model 4330s/4331s:
With a fingerprint reader and USB 3.0 646331-001
Without a fingerprint reader and with USB 3.0 646333-001
With a fingerprint reader and USB 2.0 658336-001
Without a fingerprint reader and with USB 2.0 658337-001
With no USB logo for use in USB 2.0 or USB 3.0 computers with a fingerprint reader 667660-001
With no USB logo for use in USB 2.0 or USB 3.0 computers without a fingerprint reader 667661-001
72 Chapter 4 Removal and replacement procedures