4GB Memory RAM for Toshiba Satellite A300-1OS 200pin PC2-5300 667MHz DDR2 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
8GB (4GBx2) Team High Performance Memory RAM Upgrade For Toshiba Satellite A300-1IO A300-1IW A30 0-1MC A300-1ME Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com
RAM memory for Toshiba Satellite A300-2CE
Specs Toshiba Satellite A300-25K T6400 Notebook 39.1 cm (15.4") Intel® Core™2 Duo 4 GB 320 GB HDD AMD Mobility Radeon HD 3650 Windows Vista Home Premium Black Notebooks (PSAGCE-0DL01EGR)