An optoelectronic transceiver module comprising a housing having a first opening at a first end and a second opening at a second end; a printed circuit board mounted within the housing; an electrical connector on the printed circuit board at the first end of the optoelectronic transceiver module, the...http://www.google.co.uk/patents/US6607307?utm_source=gb-gplus-sharePatent US6607307 - Transceiver module having variable voltage capability