PSU

"PSU" stands for Power Supply Unit, and is the part of a PC that transforms AC electricity to DC electricity so it is usable in a computer.

The PSU connects to the motherboard through a few main cables, to include:

• 20/+4 (24-pin) power connector to the motherboard. This provides main power, including chipset, RAM, CPU, and is responsible for interacting with all components on some level.
• 4/8-pin "EPS" connector. This connection is established near the CPU and is commonly overlooked by novice builders. The 4/8-pin connector provides a steady stream of power to the CPU.

Other PSU cables are attached to components directly, like GPUs, SSDs, HDDs, and other drives.

See Also

• Rails (PSU)
• Modular Cables
• 80 Plus

Read More

• Test a PSU with a Paperclip.
• PSU Dictionary: Learning the Basics of PSU Specs.

Related Products

• Power Supply Sales (Newegg).
• Power Supply Sales (Amazon).