Kingston Technology 4 GB (1x4 GB Module) 1333MHz DDR3 PC3-10600 240-Pin ECC DIMM Memory for Select Dell Servers KTD-PE313E/4G
Kingston is the industry leader in PC memory.  Kingston is your best source for system-specific memory. Product is backed by a lifetime warranty and free technical support. Included in the package is one 4GB module of Dell Server memory.  Specs are 240-pin unbuffered DIMM, ECC.