8GB KIT (2 x 4GB) for HP-Compaq 600 Notebook Series HP 620 HP 625 HP 635. SO-DIMM DDR3 Non-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
parts-quick 8GB (1 X 8GB) Memory for HP ProBook 635 Aero G7 Notebook PC Compatible DDR4-3200 SoDIMM RAM Upgrade at Amazon.com