The Thermaltake TR2 500W ATX Power Supply is a universal power supply unit compatible with various brands and models. With a maximum power output of 500W and a cooling system featuring a fans, this black power supply is designed for reliability and efficiency. The 20+4 pin connectors and ATX form factor make it easy to install in various computer setups. Additionally, the 115V/230V voltage selector allows for flexible use in different electrical environments, making it a versatile choice for users looking for a dependable power supply for their computer system.