A55 Desktop (ThinkCentre) ThinkCentre A55 (type 8705, 8706, 8972, 8975, 8982, 8985, 8994, 9265) / M55e (type 6490, 6491, 9278, 9279, 9288, 9379, 9380, 9389, 9632, 9637, 9648, 9649) BIOS 2OKT48A
