4GB memory module (PC3-10600, 1333-MHz, DDR3)
HP 621569-001, 4 GB, 1 x 4 GB, DDR3, 1333 MHz, 204-pin SO-DIMM
HP 621569-001. Component for: Laptop, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory speed: 1333 MHz, Memory form factor: 204-pin SO-DIMM