A computing device comprises a head that can be docked to a base. The base includes a base transceiver to transmit (or receive) a signal via a first port of a waveguide. The waveguide also includes at least a second port and a third port. The head includes a head transceiver to transmit (or receive) the signal via the waveguide. When the head is in a first position relative to the base, the head transceiver may transmit (or receive) the signal via the second port. When the head is in a second position relative to the base, the head transceiver may receive transmit (or receive) the signal via the third port.