P000540150 Toshiba Protege R835 Laptop Motherboard w/ Intel i3-2310M 2.1GHz CPU System Pull. Guaranteed for 90 days. Genuine part. Toshiba Toshiba Protege R835 Laptop Motherboard w/ Intel i3-2310M 2.1GHz CPU Parts can usually not be interchanged - please check to make sure that your original part has this part number or that the manufacturer recommends this replacement part for your system.