Komputerbay 4GB DDR3 SODIMM (204 pin) 1333Mhz PC3 10600 4 GB (9-9-9-25) Komputerbay 4GB DDR3 SODIMM (204 pin) 1333Mhz PC3 10600 4 GB (9-9-9-25) Well Tested. Non-ECC Non parity Voltage 1.5V. GOLD LEADS. SUPPORTS DUAL CHANNEL Lifetime Warranty COMPATIBLE WITH LAPTOPS