8GB KIT 2x 4GB Acer Aspire 7741 7741-6456 7741G 7741G-6480 7741Z 7741Z-4433 7741Z-4485 7741Z-4641 7741Z-4839 7745 SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory Genuine A-Tech Brand 8GB KIT (2 x 4GB) SO-DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Acer Aspire. (See Compatibility List Below)