32GB, 240-pin DIMM, DDR3 PC3-10600 Memory Module at Amazon.com
32GB DDR3-1600 Computer RAM for sale | eBay
A-Tech 32GB KIT (4 x 8GB) For Dell Precision Notebook Series Mobile Workstation M4600 Mobile Workstation M6500 (Quad Core) Mobile Workstation M6600 (. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory at Amazon.com