2GB 1333MHz DDR3 SO-DIMM PC3-10600 204Pin SO-DIMM CL9 Memory RAM Upgrade Module for iMac, Mac Mini, MacBook Pro and PC Laptops (OWC1333DDR3S2GB) at Amazon.com
CMS 256MB (1X256MB) SDRAM PC100, 133MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with IBM® Thinkpad A21M, A21P, A22E, A22M, A22P, 1600 SDRAM - B95 at Amazon.com
Infineon 512mb Pc100 ECC Reg Sdram Dimm at Amazon.com