What is the component that usually has a dual-voltage selector switch and has cables that connect to the motherboard and drives called? A. HDDB. PSUC. DIMMD. PCIe

The answer is "Option B"

Explanation:

The PSU stands for "power supply unit", it is an internal component of a device which is used to convert current AC to DC power that is controlled by low-voltage, and other choices are not correct, that is explained as follows:

In option A, HDD is used to store data, that's why it's wrong. In option C, It is a small memory chip, that is used to hold data. In option D, It is a device that is used to add a graphics card, that's why it is not correct.