1GB STICK For Sapphire PE Series PE-A7RS482M (Socket 754) PE-A9RS482M (Socket 939) PE-AM2RS485M PE-I7RC410M PE-I7RC410M-2 (DDR). DIMM DDR NON-ECC PC3200 400MHz RAM Memory. Genuine A-Tech Brand. 1GB STICK DIMM DDR NON-ECC PC3200 400MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Sapphire PE Series. (See Compatibility List Below)