Crucial 4GB Single DDR4 3200 MT/S (PC4-25600) CL22 SR X16 SODIMM 260-Pin Memory - CT4G4SFS632A at Amazon.com
Best Seller DDR4 3200 MHz High Speed 4GB Memory RAM for Desktop Computer PC 1.2V - China 16g 3200MHz PC Memory Module and 8g 3200MHz PC Memory Module price
HP 4GB DDR4-3200 SODIMM (13L79AA) - Shop HP.com Hong Kong