This Dell A4849737 compatible 4GB (2x2GB) DDR2-800MHz DDR2-800MHz Dual Rank Unbuffered 1.8V 200-pin CL5 SODIMM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. All our memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements. Our products are also guaranteed by federal law to not affect or void OEM warranties.

• SoDIMM 4 GB of memory to refine your computer's performance
• 200-pin-pin DDR2-800/PC2-6400 operates at up to 400 MHz data bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation
• Up to 800 MHz speed is enough to run heavy software smoothly while surfing web with dozens of tabs open