CMS 4GB (2X2GB) DDR2 3200 400MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with IBM® Intellistation Z Pro (6223-Xxx) Single Rank Compatible with Servers Only - B66 at Amazon.com
EG098AV HP 2GB Kit (2 X 512MB) PC2-3200 DDR2-400MHz non-ECC Unbuffered CL3 240-