The Interex 2-way Data Switch MDS-1a is a beige external switch with a white enclosure, designed for use with Interex A & B 25 models. It features 1X parallel/serial-25 pin D-Sub (DB-25) female interfaces, making it compatible with PCs. The switch has a compact form factor of 7 inches in depth, 3 inches in height, and 4 inches in width. It is a wired networking device that offers versatility in connectivity with both serial and parallel technology options. This product from Interex is a reliable and efficient solution for managing data flow between different devices. this item comes inside box. sold asseen and As-Is.