CMS 2GB (2X1GB) DDR2 4200 533MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Dell® Latitude 2100 Notebook DDR2 - A59 - Walmart.com
2GB Black Diamond Memory Module for Compaq Pavilion dm3 Series dm1z-2100 DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade System Specific Memory - Newegg.com
1GB SODIMM PC-2100 RAM Memory for IBM ThinkPad A31p at Amazon.com