8GB KIT (2 x 4GB) For Asus M2N Series M2N68 (ECC Unbuffered) M2N68 Plus (ECC Unbuffered) M2N68-AM Plus (ECC Unbuffered). DIMM DDR2 ECC Unbuffered PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. 8GB KIT (2 x 4GB) DIMM DDR2 ECC Unbuffered PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Asus M2N Series. (See Compatibility List Below)