Dell 256MB SDRAM PC133 Unbuffered Module Pins: 168 Voltage: 3.3V Frequency: 133MHz Ranks: 2 Compatible Products 311-0786 (Dell); 3395D (Dell) Compatible Systems Dell Dimension Dimension 2100/2200 Dimension 2300 Dimension 2300 LE Dimension 4100 Dimension 4200 Dimension 4300/4300S Dimension L400c/L433c/L466c/L500c Dimension L433cx/L500cx/L533cx Dimension L500r/L550r/L600r Dimension L566cx/L600cx Dimension L633cx/L667cx/L700cx/L800cx Dimension L667r/L733r/L800r Dimension L700cxe/L800cxe/L900cxe Dimension L866r/L933r/L1000r/L1100r Dimension XPS T450 Dimension XPS T500 Dimension XPS T550 Dimension XPS T600r Dimension XPS T650r Dimension XPS T700r Dimension XPS T750r Dimension XPS T800r, T850r Dell OptiPlex GX OptiPlex GX115 OptiPlex GX150 OptiPlex GX240