Actual Items Manufacturer or Batch Number Fully Tested Before Shipping Model: DDR2 SODIMM Capacity: 4GB Frequency: 800MHz Function: DDR2 200-Pin Scope of Application: Laptop Memory 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: - The recognition on XP is around 3GB - The recognition on Windows 7 32-bit is around 2.26–4.5GB - The recognition on Windows 7 64-bit is around 8–16GB Before purchasing, please confirm compatibility with your laptop model. Common designations include: - 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 Appearance and color may vary between product batches; this does not affect functionality. Color: Green Material: PCB Size: 7 x 3 cm Package Contents: 1 x RAM Module Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance: ±1–3 cm.