2GB PC2-6400 (800Mhz) 200 pin DDR2 SODIMM (BJE) Module Capacity	 2GB, Data Rate	DDR2- 800MHZ, Speed PC2-6400, Module Configuration 128 x 8 low density Version & Type	Unbuffered, Non-ECC, CAS Latency CL=6 / 1.8V Motherboard Chipset Compatibility PC laptops 200pin Backward Compatibility with PC2-5300, PC2-4200.