Patent ID: 7813208

Claim:
A motherboard for supporting different types of memories, comprising: a driving module; at least two first slots arranged for mounting two first type of memories and connected to the driving module via a channel, wherein the two first type of memories are adjacent to each other, each first slot comprises a ground terminal generating a ground signal when the first type of memory is mounted therein; at least two second slots arranged for mounting two second type of memories and connected to the driving module via the channel, wherein the two second type of memories are adjacent to each other, each second slot comprises a ground terminal generating the ground signal when the second type of memory is mounted therein, and the first type of memories and the second type of memories are alternatively mounted on the motherboard; and a voltage regulator connected to the driving module via the channel to detect which type of memory is mounted on the motherboard, and output voltages suitable for the detected type of memory mounted on the motherboard, the voltage regulator comprising: a feedback circuit receiving the ground signal from the ground terminal of the first slot or the second slot and outputting a constant feedback voltage according to the ground signal; a controller comprising a feedback terminal to receive the constant feedback voltage and convert the constant feedback voltage to a first voltage, and an output terminal to output the first voltage to the first slot or the second slot; and a linear voltage regulator comprising an input terminal to receive the first voltage from the output terminal of the controller and convert the first voltage to a second voltage, and an output terminal to output the second voltage to the first slot or the second slot.