Memory - HP 640 ProBook G3 Series Maintenance And Service Manual

5. Remove the keyboard (8).
Reverse this procedure to install the keyboard.

Memory

Description
Memory
4GB 2133MHz 1.2v DDR4 shared memory
8GB 2133MHz 1.2v DDR4 shared memory
IMPORTANT:
replacement
Before removing the memory module, follow these steps:
1. Shut down the computer.
2. Disconnect all external devices connected to the computer.
50 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
Make special note of each screw and screw lock size and location during removal and
Spare part number
820569-002
820570-002