SPE Switch & Media Converter HARTING SPE Switch and Media Converters feature T1 SPE Ports, allowing for a size reduction in the interface and cable and an increased density in the cable. The overall slim design means further increased density and subsequent optimisation of space in cabinets. These devices provide seamless SPE infrastructure using the IEC 63171-7 standard. SPE Media converter is the bridge/gateway between installed networks and single-pair ethernet devices. HARTING SPE Switch and Media Converters applications include the integration of SPE end-devices in existing networks and evaluation and testing.