An I/O device in the form of an internal dongle includes a body having connective structure being arranged to removably attach the body to a housing of an electronic device. The dongle also includes a circuit assembly that has an exterior connector on the body for electrically connecting to a second...http://www.google.com/patents/US6496892?utm_source=gb-gplus-sharePatent US6496892 - Control device with PCMCIA card for communications with field device
