Kingston Technology ValueRAM 16 GB Kit of 4 (4x4 GB Modules) 1333MHz DDR3 PC3-10666 ECC CL9 DIMM Intel Certified Server Memory (KVR13E9K4/16I) Kit of 4 4 GB modules of 1333MHz DDR3 Memory Specifically designed and tested for compatibility in various devices 240-Pin Unbuffered DIMM From the industry leader in PC Memory Backed by a lifetime warranty and free technical support Intel Certified