AddOn 16GB DDR4 SDRAM Memory Module - For Desktop PC, Computer - 16 GB (1 x 16GB) - DDR3-2666/PC3-21300 DDR4 SDRAM - 2666 MHz Dual-rank Memory - CL17 - 1.20 V - Non-ECC - Unbuffered - 288-pin - DIMM - Lifetime Warranty

This HP® 3PL82AA Compatible Factory Original 16GB DDR4-2666MHz Unbuffered Dual Rank x8 1.2V 288-pin CL19 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.