The correct answer is E. 2.5 – 5 volts.
The voltage on pin 1 of the power supply is the standby voltage, which is used to power the motherboard’s BIOS. The BIOS is a small program that is stored on a chip on the motherboard. It is responsible for initializing the hardware and loading the operating system when the computer is turned on.
The standby voltage is typically in the range of 2.5 to 5 volts. If the voltage is too low, the BIOS will not be able to initialize the hardware and the computer will not boot. If the voltage is too high, it can damage the hardware.
The other options are incorrect because they are not in the range of 2.5 to 5 volts. Option A, Oct-20, is a date range. Option B, 01-May, is also a date range. Option C, 50 – 110, is a range of voltages that is too high. Option D, 15 – 25, is a range of voltages that is too low.