Model: DDR2 SODIMM Capacity: 2GB Frequency: 667MHz Working Voltage: 1.8V Function: DDR2 200PIN Scope of Application: Laptop Memory RAM Pins: DDR for Desktop = 184 pins DDR for Laptop = 200 pins DDR2 for Desktop = 240 pins DDR2 for Laptop = 200 pins DDR3 for Desktop = 240 pins DDR3 for Laptop = 204 pins System Memory Recognition: XP: Approximately 3GB Windows 7 32-bit: Approximately 2.26-4.5GB Windows 7 64-bit: Approximately 8-16GB Compatibility Information: PC2 4200 = DDR2 533MHz PC2 5300 = DDR2 667MHz (Compatible with DDR2 533MHz) PC2 6400 = DDR2 800MHz (Compatible with DDR2 667MHz, DDR2 533MHz) PC2 8500 = DDR2 1066MHz Color: Green Material: PCB Size: 7 x 3cm Package Contents: 2 x Memory Note: Different production batches may vary slightly in appearance. Color may vary randomly and cannot be specified. This does not affect functionality. The package includes only the items listed above. Note: Lighting and display settings may cause slight color differences between the image and the actual item. Measurement error allowed is +/- 1-3cm.