What is a MDI/MDI-X Connection?

MDI (Medium Dependent Interface) and MDI-X (MDI Crossover) are two types of Ethernet port configurations. MDI ports are typically found on network devices like computers or routers, while MDI-X ports are often used on switches and hubs. The key difference is in the wiring configuration—MDI requires a straight-through cable, while MDI-X uses a crossover cable to connect devices.

Modern network devices often have Auto-MDI/MDI-X allowing automatic detection and adjustment of the cable type. This technology simplifies the connection process and eliminates the need for crossover cables in most situations.

Content created by Mike Day