4GB STICK For Asus N Series N43Jf N43JM N43JQ N43SL N43SM N43SN N45SF N45SL N52DA-X1 N53DA N53JF N53JG N53JL N53JN N53JQ N53SM (Dual-core) (2 Slots) N53SM (Quad-core) (4 Slots) N53S3SN (Dual-core) (2 Slots) N53S3SN (Quad-core) (4 Slots) N53SV (Dual-core) (2 Slots) N53SV (Quad-core) (4 Slots) N53TA N53TK N55SF N55SL N61DA N61JA N61JQ N61JV N71JA N71JQ N71JQ-XT1 N71JV N73JF N73JG. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. 4GB STICK SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Asus N Series. (See Compatibility List Below)