a70 b a75 биосы одинаковые, Satellite A70-S249, A70-S2491, A70-S259, A70-S2591, A70-S2362, A70-S2492ST, A70-S256, A70-S2561, A70-S2482TD, A75-S2293, A75-S2311, A75-S231, A75-S2111, A75-S211, A75-S2292, A75-S2291, A75-S229, A75-S2091, A75-S209, A75-S2762, A75-S2761, A75-S276, A75-S2261, A75-S226, A75-S2061, A75-S2112, A75-S213, A75-S2131, A75-S125, A75-S1251, A75-S1253, A75-S1252, A75-S1254, A75-S206, A75-S1255
схема то же есть