Patent ID: 8928189
Filing Date: 2015-01-06
Classification: G06F

Abstract:
1. An apparatus, comprising: at least one processor; and a non-transitory storage medium including computer program code, where the storage medium and the computer program code are configured, with the at least one processor, to cause the apparatus to at least: identify based at least on a voltage level at an identification terminal of a second serial interface whether a device connected with the second serial interface to a first serial interface connected to the apparatus is configured to supply power via the second serial interface to the first serial interface; and based on identifying that the voltage level at the identification terminal of the second serial interface is above the predetermined voltage threshold, disconnect a power terminal of the first serial interface to a power terminal of the second serial interface, and based on identifying that the voltage level at the identification terminal of the second serial interface is below or equal to the predetermined voltage threshold, connect the power terminal of the first serial interface to the power terminal of the second serial interface, wherein the first serial interface comprises at least one data line and at least one power supply line, and wherein the power terminal of the first serial interface is connected to or disconnected from the power terminal of the second serial interface based on the voltage level at the identification terminal of the second serial interface being one of above and not above a predetermined voltage threshold.