How does a computer power supply work and what are the different types?

A computer power supply is an essential component that provides the necessary power for all the parts of a computer to function properly. The power supply unit (PSU) converts the alternating current (AC) from the wall outlet to the direct current (DC) needed by the computer's internal components.

There are two main types of power supplies: standard and modular. Standard power supplies come with all of the necessary cables and connectors attached, whereas modular power supplies have removable cables and connectors that allow you to choose only the ones you need.

Power supplies are rated by their maximum output power, which is typically measured in watts (W). Higher wattage power supplies can handle more power-hungry components, such as high-end graphics cards and processors.

Some other types of power supplies include:

• ATX: This is the most common type of power supply for desktop computers. It typically has a 24-pin motherboard connector and four to eight pins for the CPU.
• SFX: These power supplies are smaller than ATX power supplies and are commonly used in small form factor (SFF) computers.
• TFX: This type of power supply is even smaller than SFX and is used in some ultra-compact desktop computers.
• FlexATX: These power supplies are designed for use in low-profile computers, such as home theater PCs (HTPCs).