The switch does it automatically, no manual setting. Page 25 of the user guide: Auto-MDI/MDIX Support The switch supports auto-detection between crossed and straight-through cables. Media-Dependent Interface (MDI) is the standard wiring for end stations, and the standard wiring for hubs and switches is known as Media-Dependent Interface with Crossover (MDIX). [URL] Cheers
Is it possible to configure MDIX on an individual port with the 6248 PowerConnect Switch?  I can't find any reference in the CLI manual.
PowerConnect 6248 - Crossover Configuration (MDIX)