An interface converter module includes a metallized housing having a first end and a second end. A printed circuit board is mounted within the housing and has mounted thereon electronic circuitry configured to convert data signals from a host device transmission medium to the second transmission medium....http://www.google.de/patents/US7090509?utm_source=gb-gplus-sharePatent US7090509 - Multi-port pluggable transceiver (MPPT) with multiple LC duplex optical receptacles
