A device can be configured to provide isolation between conductive circuit paths and to selectively connect one of the conductive circuit paths to a shared interface. Each conductive circuit path can include driver circuitry designed to transmit signals according to a particular protocol and a corresponding signal speed. The shared interface can be, in one instance, a connector designed for connection to other devices. The other devices can be configured to communicate over the shared interface using one or more of the particular protocols provided using the different circuit paths.