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

Description Spare part number
T77W595 LTE M.2 w/GPS 800870-001
Huawei Wrangler MU736 HSPA+ w/GPS M.2 793516-001
IMPORTANT: Make special note of each screw and screw lock size and location during removal and
replacement
Before removing the WWAN module, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the following components:
a. Service door (see Service door on page 37).
b. Remove the battery (see Battery on page 38)
c. Hard drive (see Hard drive on page 39).
d. Solid state drive (see Solid-state drive (select products only) on page 41).
Remove the WWAN module:
1. Disconnect the two cables (1).
Component replacement procedures 43