Dell 1GB DDR3 PC3-10666 Unbuffered Module Pins: 240 Voltage: 1.5V Frequency: 1333MHz Ranks: 1 Compatible Products A1595858 (Dell); A2578595 (Dell); A3132541 (Dell); A3132543 (Dell) Compatible Systems Dell Dimension XPS Studio XPS XPS 430 XPS 730 XPS 730X Dell OptiPlex OptiPlex 980 Dell Precision Precision Workstation T1500 Precision Workstation T3500 Dell Studio Desktop Studio XPS 7100 Studio XPS 8000 Studio XPS 8100 Studio XPS 9100 Dell Vostro Vostro 230 Mini Tower / Slim Tower Vostro 430