KOMPUTERBAY 8GB (2x 4GB) DDR3 SODIMM (204 pin) made with Hynix semiconductors 1066Mhz PC3 8500 for Apple 8 GB with SODIMM Heatsink for extra cooling 100% COMPATIBLE MEMORY made with Hynix semiconductors CAPACITY: 8GB Well Tested. Non-ECC Non parity Voltage 1.5V. GOLD LEADS. SUPPORTS DUAL CHANNEL Lifetime Warranty and comes with SODIMM Heatsink for extra cooling COMPATIBLE WITH LAPTOPS