What are the two voltage readings on the power supply?

The two voltage readings on a power supply typically refer to the output voltages it provides, which are often 5V and 12V for standard ATX power supplies used in computers. The 5V output is commonly used for peripherals and logic circuits, while the 12V output powers components like the CPU and graphics card. Some power supplies may also feature additional voltages, such as 3.3V, depending on the application.