US Patent 11392531 Rotatable port units

Example of systems with rotatable port units are described. In an example, a system includes a control unit, a first port unit with a first set of ports coupled to the control unit, and a second port unit with a second set of ports coupled to the control unit. The second port unit is mounted on the first port unit and is rotatable with respect to the first port unit. The control unit is to enable a sub-set of ports from the second set of ports and the first set of ports based on a rotational position of the second port unit with respect to the first port unit.