This 4-Pin ATX Power Supply Jumper Bridge Tool is an essential accessory for computer builders and technicians. It allows you to easily jump-start a computer's power supply unit (PSU) for testing or troubleshooting purposes. The tool consists of plastic blocks, each with multiple sockets to accommodate various pin configurations. Simply insert the jumper into the correct pins on the PSU to provide the necessary power signal, bypassing the need for a motherboard connection. With its compact and lightweight design, this tool is highly portable and convenient to carry in your toolbox. Whether you're a professional or an enthusiast, this jumper bridge tool streamlines the process of diagnosing and verifying PSU functionality, saving you time and effort.