32GB DDR4-2666 ECC UDIMM 1.2V module
32GB Module - DDR4 - ECC - Unbuffered - 2666MT/s - PC4-21300 - 19ns CAS Latency - 1.2V - Micron E-Die DRAM Modules
32GB Server Premier DDR4-2666 ECC Registered w/ Parity
32GB Module - DDR4 - ECC - Registered - 2666MT/s - PC4-21300 - 19ns CAS Latency - 1.2V - Hynix A-Die Chips