A-Tech 8GB Kit (2X 4GB) DDR3 1333MHz PC3-10600E 2Rx8 240-pin ECC-Unbuffered DIMM for HP Workstation Z200 and Z400 – Server Memory Ram Modules at Amazon.com
TEAMGROUP Elite DDR3L 8GB Single 1600MHz PC3-12800 CL11 Unbuffered Non-ECC 1.35V SODIMM 204-Pin Laptop Notebook PC Computer Memory Module Ram Upgrade - TED3L8G1600C11-S01 at Amazon.com
A-Tech 8GB Kit (2X 4GB) DDR3 1333MHz PC3-10600E 2Rx8 240-pin ECC-Unbuffered DIMM for HP Workstation Z200 and Z400 – Server Memory Ram Modules at Amazon.com