Patent ID: 7817487

Claim:
A motherboard for supporting different types of memories, comprising: a driving module; a first slot module arranged for mounting a first type of memory and connected to the driving module via a first channel, the first slot module comprising at least one first slot having a ground terminal for generating a ground signal when the first type of memory mounted therein; a second slot module arranged for mounting a second type of memory and connected to the driving module via a second channel, the second slot module comprising at least one second slot having a ground terminal for generating a ground signal when the second type of memory mounted therein, wherein the first memory and the second memory are alternatively mounted on the motherboard; and a voltage regulator electronically connected to the first slot and the second slot to detect which type of memory is mounted on the motherboard by receiving the ground signal generated by the slots, 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.