HP P/N J9P83AA, 16GB DDR4 2133MHz PC4-17000, ECC Registered Memory for HP Z440 Z640 Z840. We always ship same brand DIMMs and part numbers. Compatible with the following models:

• Buy with confidence Original HP Memory
• Lifetime warranty
• ECC Registered DIMMs & ECC UDIMMs can not be mixed. If your system came with ECC UDIMMs then use of registered DIMMs will require removal of all exisiting UDIMMs. 

eFetcher's mission is to provide its customers a variety of computer products and excellent service at affordable prices.

We have been selling computer parts to consumer since 1989 and we have over 500,000 satisfied customers. Buy with confidence, we test upgrades overnight and pack every order professionally to meet and exceed your expectations.

• Over 24 years in business
• Over 500,000 satisfied customers
• Lifetime warranty on memory upgrades
• 100% compatibilty is guaranteed
• 30 days money back guarantee