Original)2020sec DDR4 4GB Laptop Memory RAM 2600mhz Memoria260-pin SODIMM RAM Stick for Notebook 100% Original 4GB M471A5244CB0-CRC | Lazada PH
4GB Stick 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
My laptop is using 4Gb ram and I got a second ram slot so I'm deciding to buy a 8gb ram card and if I add it to my second ram slot
How Much Ram Do I Need in My Laptop? | HP® Tech Takes