CMS 4GB (1X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Precision Mobile Workstation M4500 - A30 at Amazon.com
2GB Team High Performance Memory RAM Upgrade Single Stick For Dell Precision M4500 M6400 M6500. The Memory Kit comes with Life Time Warranty. at Amazon.com