4 x 16gb DDR4 ECC Reg Server DIMMs 2Rx4 PC4-2133P. Guaranteed compatible with models listed in title, and all other servers which support 16gb DDR4 PC4-2133 ECC Reg dimms. I have many of these sets available.Please message me if you need a larger quantity. I'll confirm which spec RAM you need, and whether I have any. Ultra fast dispatch - orders before 12 noon Monday-Friday posted same day. Proof of posting obtained for every package. Wholesale / customized listings - I'm always happy to negotiate a wholesale price, or a mixed lot, for UK or overseas buyers. Please contact me with your RAM needs. This item is in the category "Computers/Tablets & Networking\Computer Components & Parts\Memory (RAM)". The seller is "richardboston2009" and is located in this country: GB. This item can be shipped worldwide.