Actual item manufacturer or batch number may vary. Model: DDR2 SODIMM Capacity: 4GB Frequency: 667 MHz Function: DDR2 200 Pin Application: Laptop Pins of Memory RAM: 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 Read First: XP recognition is around 3 GB Win 7 32-Bit recognition is around 2.26-4.5 GB Win 7 32-Bit recognition is around 8-16 GB Before purchasing RAM, please confirm which model is suitable for your 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 The appearance and color of different batches of products may vary, which will not affect the use. Color: random colors, do not accept the specified color Material: PCB Size: 7x3cm Package Contents:1 * RAM Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.