A-Tech 4GB KIT (2 x 2GB) For Toshiba Toshiba Satellite A100-TA2 A100-TA4 A100-TA6 A100-TA7 A100-TA9 A100-VA1 A100-VA3 A100-VA5 A100-VA7 A100-VA9 A100-W. SO-DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory at Amazon.com
2GB DDR2 RAM Memory Upgrade for Toshiba Satellite A100 A105 A110 Series Laptop (PARTS-QUICK) - Walmart.com
Toshiba Satellite A100-VA1 specifications
Amazon.com: 4AllDeals 2GB RAM Memory Upgrade for Toshiba Satellite A100 Series (DDR2-667MHz 200-pin SODIMM) : Electronics
4GB (2GBx2) Team High Performance Memory RAM Upgrade For Toshiba Satellite A100-090 A100-091 A10 0-110 A100-158 Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com