- Written by Munisha Rani
- Posted on June 5, 2023
- Updated on June 16, 2023
- 4983 Views
MDI/MDI-X refer to the pin layout of BASE-T ports on various networking devices. Historically, servers, workstations etc. use MDI pin layout while switches generally have MDI-X pin layout. MDI is part of the media attachment unit that provides the physical and electrical connection to the cabling medium when linking two endpoint devices.