Toshiba M45 M40 M55 M35X A55 512MB MEMORY DDR PC2700 333MHZ     TESTED -- 100% Functional ==   YOU WILL RECEIVE 2 STICKS OF 256MB FOR A TOTAL OF 512MB RAM. I HAVE SEVERAL OF THESE RAMS. THEY MAY NOT BE IDENTICAL PAIR. BUT THEY ARE ALL PC2700 AND GUARANTEED TO WORK --     If for some reason you are not satisfied with received item, e-mail us through eBay message system. Don't leave negative feedback, money back guaranteed! We value your time and business.