Information handling system mobile adapter with rotational cable management

A method for managing a cable at a mobile peripheral adapter, the method comprising:

• coupling the cable to electronic components of a first circular housing portion, the cable having video wirelines and other wirelines, the electronic components disposed on a video circuit board or a communications circuit board;
• routing the cable out a central location of the first circular housing and into a cable guide, the cable guide directed along an axis from the center location towards an outer perimeter of a second circular housing portion;
• maintaining the cable within the second circular housing portion between an outer wall of the second circular housing portion and an inner wall of the cable guide, the second circular housing portion having a cable plug opening;
• and
• rotating the first and second housing portions to retract and extend the cable based upon the orientation of the cable guide axis and the cable plug opening;
• coupling the video wirelines of the cable to the video circuit board integrated in the first housing portion;
• coupling the other wirelines of the cable to the communications circuit board integrated in the first housing portion, the video circuit board separate from the communications circuit board;
• coupling a flexible cable directly between the video circuit board and communications circuit board;
• and
• providing power and ground from the communications circuit board to the video circuit board through the flexible cable.

An adapter to convert video information from USB protocol to a selected of plural video protocols, the adapter comprising:

• a circular housing having first and second portions rotationally coupled to each other;
• a USB cable extending out of the second housing portion and having video wirelines interfaced with video protocol converters disposed in the first housing portion on a first circuit board, the USB cable having power and ground wirelines interfaced with a second circuit board;
• a flexible cable providing the power and ground from the second circuit board to the first circuit board;
• and
• plural video ports disposed along the perimeter of the first housing portion and interfaced with the video protocol converters;
• wherein rotation of the first and second portions relative to each other engages the USB cable to retract the USB cable into the housing in response to rotation in a first direction and extend the USB cable out of the housing in response to rotation in a second direction.