This Lenovo 0B47380 compatible 4GB DDR3-1600MHz Dual Rank Unbuffered 1.35V 204-pin CL11 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
• DDR3-1600/PC3-12800 interface synchronizes electrical and clock signals for an efficient data transfer rate
• No matter how heavy and numerous the applications that you are using, 1600 MHz memory speed with CL11 latency will run them smoothly