2GB KIT (2 x 1GB) For HP-Compaq Business Desktop Series dc5100 (Microtower) dc5100 (Small Form Factor) dc7600 (Convertible Minitower) dc7600 (Small Form Factor) dc7600 (Ultra-Slim Form Factor) dc7700 (Ultra-Slim Form Factor) dx2060 dx2100 dx2180 dx2280 dx2290 dx2295 dx6120 (All Form Factors) dx6128 dx7200 (Slim Tower/Microtower) dx7300 (Microtower) dx7300 (Slim Tower) dx7380. DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 2GB KIT (2 x 1GB) DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq Business Desktop Series. (See Compatibility List Below)