This 4GB DDR3 SO-DIMM module operates at 1333MHz with a voltage of 1.5V. It is ideal for upgrading compatible laptops such as the HP 420, 620, 625, EliteBook 2540p, ProBook 6450b, 6550b, and 6555b. Enhance your system's performance with this unbuffered, non-ECC memory.
Addon 599092-002-AA 4GB DDR3 SO-DIMM 1333MHz Memory