Crucial 2GB Single DDR2 667MHz (PC2-5300) CL5 SODIMM 200-Pin Notebook Memory Module CT25664AC667 Memory Speed- PC5400; Memory Speed MHz- 667MHz Memory Category- Laptop; Memory Type- DDR2 Memory Size- 2048MB; Memory Modules- 1; Memory Channels- Dual; Memory Socket- SODIMM; Memory Category- Laptop; Memory Type- DDR2 Memory Speed- PC5400; Memory Speed MHz- 667MHz Memory Size- 2048MB; Memory Modules- 1; Memory Channels- Dual; Memory Socket- SODIMM;