Kingston, the world's largest independent memory manufacturer, has over 2,000 memory products. In today's performance driven environment, memory upgrades provide an easy, economical alternative to increase system performance. Every memory product Kingston offers is designed to help you get maximum performance at the best price to you.??This memory is designed for Toshiba Portege 7140 CT-NT, Toshiba Satellite 1555CDS, Toshiba Satellite 2100CDS, Toshiba Satellite 2100CDT, Toshiba Satellite 2105CDS, Toshiba Satellite 2180CDT, Toshiba Satellite 2650XDVD, Toshiba Satellite 2670DVD, Toshiba Tecra 8000 PIII500, Toshiba Tecra 8100 PIII450, Toshiba Tecra 8100 PIII500.