HP ProBook 450 G5: how to change hard disk, hdd, ssd, m 2 disk, ram, memory

How to open HP ProBook 450 g5 to add hard disk or SSD or upgrade ram/memory.
SSD: M.2: PCIE NVME 80
RAM: PC4

RAM modules at Siggmo: https://siggmo.com/product-category/l...
SSD disks at Siggmo: https://siggmo.com/product-category/s...

HP laptop spare parts: https://siggmo.com/product-tag/hp/

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