This HP® X2E91AA Compatible 16GB DDR4-2133MHz Dual Rank Unbuffered 1.2V 260-pin CL15 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.

• 16 GB capacity is enough to execute all memory hungry programs simultaneously
• DDR4 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer's performance
• Up to 2133 MHz speed with Unbuffered signal and CL15 latency for smooth computer performance