AddOn Lenovo 4X70G88313 Compatible Factory Original 8GB DDR4-2133MHz Unbuffered Dual Rank x8 1.2V 288-pin UDIMM - 8 GB (1 x 8GB) - DDR4-2133/PC4-17000 DDR4 SDRAM - 2133 MHz Dual-rank Memory - 1.20 V - Non-ECC - Unbuffered - 288-pin - UDIMM - Lifetime Warr

This Lenovo 4X70G88313 Compatible Factory Original 8GB DDR4-2133MHz Unbuffered Dual Rank x8 1.2V 288-pin UDIMM 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.