2GB KIT (2 x 1GB) For HP-Compaq HP Presario Desktop SR1804FR SR1805FR SR1806FR SR1807CL SR1807FR SR1807IT SR1807UK SR1809FR SR1810NX SR1811NX SR1815LA SR1817CL SR1819IT (DDR) SR1819UK SR1820FR SR1820NX SR1829NL SR1840FR SR1849IT SR1859NL SR1867ES SR1869ES SR1869IT SR1877ES SR1879UK SR1900NX SR1900Z SR1901WM SR1902HM SR1902LS SR1903WM SR1903WM-B SR1905LA SR1907CL SR1907CL-B SR1909IT SR1909SC. DIMM DDR NON-ECC PC3200 400MHz RAM Memory. Genuine A-Tech Brand. 2GB KIT (2 x 1GB) DIMM DDR NON-ECC PC3200 400MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq HP Presario Desktop. (See Compatibility List Below)