Model: DDR2 SODIMM Capacity: 2GB Frequency: 667Mhz Operating Voltage: 1.8V Function: DDR2 200PIN Scope of application: laptop Memory pins Desktop DDR=184pin Laptop DDR=200pin Desktop DDR2=240pin Laptop DDR2=200pin Desktop DDR3=240pin Laptop DDR3=204pin Read first XP recognition is about 3GB Win 7 32Bit recognition is about 2.26-4.5GB Win 7 recognition 32Bit is about 8-16GB to buy RAMs, please confirm which model is suitable for your desktop/laptop, the usual models are as follows: 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: 6 x Memory Note: Different batches of products are slightly different, the random color (does not accept the specified color) does not affect Use Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item