Described herein is an apparatus for improving bandwidth of a transceiver system e.g., a Universal Serial Bus (USB) micro-B connector. The apparatus comprises a first pair of lens units, each lens unit of the pair positioned on either side of an input-output (I/O) bus interface, the pair of lens units to send and receive optical signals respectively; a first housing to shield the first pair of lens units and for physically coupling the I/O bus interface and the first pair of lens units to a receptacle; and a key to grasp the first housing and to lock the first housing with the receptacle.