HP ProBook 640 G2 Notebook PC, HP ProBook 645 G2 Notebook PC, HP ProBook 650 G2 Notebook PC and HP ProBook 655 G2 Notebook PC - Maintenance and Service Guide

c. Hard drive (see Hard drive on page 39).
d. Solid-state drive (see Solid-state drive (select products only) on page 41).
e. WWAN module (see WWAN module (select products only) on page 42).
f. WLAN module (see WLAN module on page 44).
g. Optical drive (see Optical drive on page 46).
Remove the keyboard:
1. Remove the 3 M 2x4L screws that secure the keyboard to the computer.
2. Position the computer open and on its side.
Component replacement procedures 49