2pcs. 32GB DDR3, 1333MHz, ECC, CL9, 2R, X4, 1.5V, Registered, DIMM DDR3-PC10600 

We guaranty this kit will work in your machine.  Lifetime exchange or repair warranty against manufacturing defects by Computer Memory Solutions Brand Computer Memory Solutions 

Maximum Memory: 64 GB ECC UDIMMs 256 GB Reg ECC RDIMMs 512 GB ECC LRDIMMs Expansions: 8 Socket(s) 

Compatible with Supermicro X9SRi-F, X9SRi-3F, X9SRi, X9SRH-TPF MBD-X9SRW-F-B, MBD--3F-B, MBD-X9SRL-F-B 

Important: If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). 

Maximum configurations require a 64-bit operating system. This system supports either Registered ECC (RDIMM), ECC Unbuffered (ECC UDIMM) or Load Reduced (LRDIMM) memory. 

Mixing RDIMMs, ECC UDIMMs and LRDIMMs is not supported within this system. Modules must be ordered and installed in PAIRS for Dual Channel mode, or in groups of FOUR for Quad Channel mode. Kingston offers "K4" kit part numbers for Quad Channel mode.

1866MHz memory can only be supported with certain Intel Xeon E5-2600 v2 series processors. 

Check Asus documentation for actual tested memory speeds. When using the Intel E5-1600 series CPU only one CPU socket can be populated and only the corresponding DIMMs sockets can be utilized. The Intel E5-1600 only supports ECC UDIMMs and RDIMMs

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