10/100TX to 100FX (ST) Multi-Mode Media Converter Standalone or rack-mountable device. Metal cased, ensures lifetime operation. Fits into MCR12 powered 12-slot 19"chassis. » Half- & Full-Duplex operation » Transparent to 802.1Q packets » Rack-mountable using optional AT-MCR12, TRAY4, or TRAY1 chassis » MDI/MDIX » MissingLink™ » Link Test