OWC 32GB DDR4 2933MHz PC4-23400 CL21 1.2V 288pin Server DIMM ECC Registered memory compatible with Supermicro Motherboard models X11DSN-TS, X11OPi-CPU, X11QPH+, X11QPL and X11SPA-T. 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 Supermicro part numbers MEM-DR432LC-ER29, MEMDR432LCL01ER29, MEMDR432LCL02ER29, MEMDR432LCL03ER29, MEMDR432LHL01ER29, MEMDR432LHL02ER29, MEMDR432LSL01ER29 and MEMDR432LSL03ER29.