Tripp Lite's 4-port Parallel IEEE Reversible Automatic Gold Switch supports high-speed, IEEE 1284 bi-directional communication. This versatile switch allows a single parallel device to be shared between 4 computers, or up to 4 parallel devices to be connected to a single computer. It can also be set to allow file sharing between connected computers. Gold plated DB25 female connectors and gold plated copper contacts offer superior conductivity. The device offers a compact design with broadcast mode, automatic switching and no external power source required.