Here is why we recomended Refurbished Laptops - MH Computers Ltd
HP ProBook 640 G2 Intel i5-6300U 8GB 240GB SSD 1366x768 Class A Not included | Laptops \ Screen size \ 14" - 14,9" | AMSO
HP ProBook 640 G2, Intel Core i5, 8192MB So-Dimm DDR4, 128GB M.2 SATA SSD, Intel HD Graphics 520, 14" 1366x768 WXGA LED 16:9, Grade A from for 374.40лв. only
CAN I PUT M.2 SSD OVER AN HDD IN HP PROBOOK650G2 NOTEBOOK S.... - HP Support Community - 7858938
Replacing the Hard Disk Drive Assembly | HP Probook 640 and 645 G2 Notebooks | HP Support - YouTube