Model: DDR2 SODIMM Capacity: 2 GB Frequency: 667 MHz Operating Voltage: 1.8 V Function: DDR2 200-pin Application: Laptop Memory Pins: Desktop DDR = 184 pins Laptop DDR = 200 pins Desktop DDR2 = 240 pins Laptop DDR2 = 200 pins Desktop DDR3 = 240 pins Laptop DDR3 = 204 pins Important Note: XP recognition is approximately 3 GB. Win 7 32-bit recognition is approximately 2.26–4.5 GB. Win 7 64-bit recognition is approximately 8–16 GB. Before purchasing, please confirm the model that suits your desktop/laptop. Common models are as follows: PC2 4200 = DDR2 533 MHz PC2 5300 = DDR2 667 MHz (compatible with DDR2 533 MHz) PC2 6400 = DDR2 800 MHz (compatible with DDR2 667 MHz, DDR2 533 MHz) PC2 8500 = DDR2 1066 MHz Color: Green Material: PCB Size: 7 x 3 cm Package Contents: 1 x Memory Module Note: Product batches may vary slightly; color is random (specified color not guaranteed) but does not affect usage. Only the above package content is included; other products are not. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.