4GB DDR2 Laptop RAM 800MHz PC2-6400 SODIMM 200-Pin Memory Module for AMD and Intel Laptops Model: DDR2 SODIMM Capacity: 4GB Frequency: 800MHz (PC2-6400) Form Factor: SODIMM 200-pin Compatible with laptops requiring DDR2 200-pin memory Note: This module is not compatible with desktop systems Memory Pin Count Reference: 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 System Memory Recognition Guidelines: Windows XP may recognize up to approximately 3GB Windows 7 32-bit may recognize between 2.26GB and 4.5GB Windows 7 64-bit may recognize between 8GB and 16GB Compatibility Information: 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 Please verify your laptops motherboard model and memory specifications before purchase. Compatible chipsets include GL40, GM45, GS45, PM45, PM65. Supported only by PM945 or 965 chipsets. Design and color may vary by manufacturing batch. Item will be shipped in random color. Material: PCB Dimensions: 7 x 3 cm (may vary by +/- 1-3 cm due to measurement tolerance) Package Includes: 1 x 4GB DDR2 SODIMM RAM Module Note: Accessories shown in images are not included. Display lighting and screen settings may cause slight variations in color representation.