HP ProBook 640 G2 Ram and SSD upgrade

How to open and install additional memory and swap hard drive to #SSD or M.2

Ram I installed: 8GB SODIMM 1Rx8 DDR4 PC4-19200T 2400MHz #Memory HMA81GS6AFR8N  x 2 so in total 16GB DDR4

SSD: TOROSUS 2.5 inch SATA3 256GB
Recommend to get M.2 SSD, will be faster.

Battery serial in case you are looking for new one: #HP part number: 801517-422

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