OWC 64GB DDR4 3200MHz PC4-25600 CL22 1.2V 288pin Server DIMM ECC Registered memory compatible with Dell PowerEdge models C6520, C6525, MX750c, R650 and R650xs. ECC REGISTERED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED memory. INDUSTRY LEADING: Consumer-friendly Advanced Replacement Program and Limited Lifetime Warranty, which includes Free Tech Support by Other World Computing. MAXIMIZE YOUR SERVER: With OWC's ECC Registered Server Memory, you will extend the life of your old infrastructure or save money when building a new one. Replacement for Dell part numbers 370AEVP, AA783423, AA799110, AA810828, AB214253, P2MYX, SNPP2MYXC/64G and SNPP2MYXC/64VXR.