Kingston Technology ValueRAM 4 GB 1333MHz DDR3L ECC CL9 DIMM DR x8 with TS 1.35V Server Hynix C Server Premier Memory 4 DDR3 1333 (PC3 10600) KVR1333D3LD8R9S/4GHC One 4 GB module of 1333MHz DDR3L Memory Specifically designed and tested for compatibility in various devices 240-Pin Registered DIMM From the industry leader in PC Memory Backed by a lifetime warranty and free technical support