A system includes a portable computer having a first bus and a docking base having a second bus. A serial link (e.g., a 1394 link) couples the portable computer to the docking base. The portable computer may include a controller to convert a first bus cycle targeted for the second bus to a serial cycle....http://www.google.de/patents/US6161157?utm_source=gb-gplus-sharePatent US6161157 - Docking system
