256MB PC2100 ECC Registered
256MB PC2100 DDR266 Registered ECC (Non-Returnable/Non-Exchangable)
512MB PC2-4200 ECC Registered DDR2-533
512MB PC2-4200 DDR2-533 Registered ECC (1-Rank) (Non-Returnable/Non-Exchangable)
16GB DDR4-2666 ECC Registered
16GB Module - DDR4 - ECC - Registered - 2666MT/s - PC4-21300 - 19ns CAS Latency - 1.2V - 5 Year Depot Carry-In Mfg. Warranty