Actual items manufacturer or batch number may vary Fully tested before shipping Model: DDR2 SODIMM Capacity: 4GB Frequency: 800MHz Function: DDR2 200-pin Scope of application: Laptop Memory RAM pin count: 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 system recognition is around 3GB Windows 7 32-bit system recognition is around 2.26–4.5GB Windows 7 64-bit system recognition is around 8–16GB Before purchasing RAM, please confirm the compatible model for your laptop. Common models include: 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 Appearance and color may vary between batches, but this does not affect performance Color: Green Material: PCB Size: 7 x 3 cm Package Contents: 1 x RAM module Note: Only the items listed above are included. Other products are not included. Light reflection and display differences may cause slight variations in color compared to the actual item. Measurement error allowed is +/- 1-3 cm.