Manufacturer or Batch Number: Not specified Model: DDR2 SODIMM Capacity: 4GB Frequency: 667MHz Form Factor: DDR2 200-pin SODIMM Compatible Device Type: Laptop Pin Count Reference: - DDR Desktop: 184 pins - DDR Laptop: 200 pins - DDR2 Desktop: 240 pins - DDR2 Laptop: 200 pins - DDR3 Desktop: 240 pins - DDR3 Laptop: 204 pins Operating System Memory Recognition Notes: - Windows XP: Approximately 3GB recognized - Windows 7 32-bit: Approximately 2.26–4.5GB recognized - Windows 7 64-bit: Approximately 8–16GB recognized Compatibility Guide (PC2 Prefix): - PC2-4200 = DDR2-533MHz - PC2-5300 = DDR2-667MHz (backward compatible with DDR2-533MHz) - PC2-6400 = DDR2-800MHz (backward compatible with DDR2-667MHz and DDR2-533MHz) - PC2-8500 = DDR2-1066MHz Note: Physical appearance, including color and finish, may vary between batches. This does not affect functionality. Color: Assorted (no color selection available) Material: PCB Dimensions: 7 x 3 cm Package Contents: 1 x DDR2 SODIMM RAM module Note: This listing includes only the item listed above. No additional accessories or components are included. Note: Screen settings and lighting conditions may cause slight color variation between product images and the actual item. Measurement tolerance: ±1–3 cm.