Features of the AT-FS232/2-20 * Half & Full Duplex operation, on both fibre and copper ports * Transparent to 802.1Q packets * Internal 2K MAC address table * Rack-mountable using optional AT-MCR12, AT-TRAY4 or AT-TRAY1 chassis * Wall-mountable using optional AT-WLMT * Auto MDI/MDIX * Missing LinkTM support * Smart Missing LinkTM support * Fibre Link Test function * Manual Auto-negotiation and speed selection on copper port