KOMPUTERBAY 4GB (2 X 2GB) DDR2 SODIMM (200 pin) 800Mhz PC2 6400 / PC2 6300 FOR Gateway 4 GB KIT 100% COMPATIBLE MEMORY CAPACITY: 4GB Well Tested. Non-ECC Non parity Voltage 1.8V. SUPPORTS DUAL CHANNEL Lifetime Warranty FOR LAPTOPS / NOTEBOOKS / NETBOOKS