A. Total capacity: 2GB B. Speed: DDR2 1066MHz C. Number of pins: 240 pins D. Type: Memory E. Voltage: DDR2 1.8V F. Memory pin description: - Desktop SDRAM memory: 184 pins - Laptop DDR memory: 200 pins - Desktop DDR2 memory: 240 pins - Laptop DDR2 memory: 200 pins - Desktop DDR3 memory: 240 pins - Laptop DDR3 memory: 204 pins G. Reading instructions: - The recognizable capacity of the XP system is around 3GB. - The recognizable capacity of the 32 - bit Win 7 system is around 2.26 - 4.5GB. - The recognizable capacity of the 32 - bit Win 7 system is around 8 - 16GB. H. Before purchasing, it is advisable to confirm which model is suitable for your desktop or laptop. Common models are as follows: - PC2 4200 = DDR2 533MHz - PC2 5300 = DDR2 667MHz (compatible with DDR2 533MHz) - PC2 6400 = DDR2 800MHz (compatible with DDR2 667MHz and DDR2 533MHz) - PC2 8500 = DDR2 1066MHz I. Color: Gold + Green J. Material: Printed Circuit Board (PCB) K. Dimensions: Length 13.3cm L. Package contents: 3 DDR2 memory modules (the actual manufacturer or batch number may vary). Only the above - mentioned package contents are included, and no other products are included. M. Note: Light and different monitors may cause slight differences between the color of the items in the picture and the actual product. The allowable error for dimensions is +/- 1 - 3cm.