MAC Panel (formerly known as Patchboard Systems) is a company that designs and manufactures connectivity solutions for automated test equipment (ATE). Its products include modular mass‑interconnect systems, I/O connectors, wiring harnesses, patch cords, custom wiring assemblies, and related interconnect hardware. The company also provides engineering support, custom interface design, and wiring services. MAC Panel serves the automotive, defense, aerospace, biomedical, electronics manufacturing, electric vehicle, and rail transportation industries.