128MB STICK For HP-Compaq HP Pavilion Desktop 7938 7955 7959 7962 7966 (SDRAM) 7972 7975 7979 8913 9995 (Non-ECC) XT948 XT958 (Non-ECC) XT978 (Non-ECC) XV998. DIMM SD NON-ECC PC66 66MHz RAM Memory. Genuine A-Tech Brand. 128MB STICK DIMM SD NON-ECC PC66 66MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq HP Pavilion Desktop. (See Compatibility List Below)