Boost the capabilities of your Z2 Mini, Tower, or Small Form Factor G4 Workstation with the 16GB DDR4 MHz 2666 ECC Unbuffered Memory Module from HP. Featuring a capacity of 16GB and a clock speed of 2666 MHz (PC4-21300), this ECC DDR4 memory module is designed to improve system performance and application responsiveness. Start-up times will be improved with fewer delays during routine operations, and more programs will be able to run simultaneously.