In accordance with some implementations of the disclosed subject matter, a method for controlling a High-Definition Multimedia Interface (HDMI) port is provided, the method comprising: generating a first voltage at a first pin of the HDMI port; detecting a second voltage at the first pin of the HDMI port; detecting a third voltage at a second pin of the HDMI port; comparing the second voltage to the first voltage; comparing the second voltage to the third voltage; determining based on the comparison of the second voltage to the third voltage that the HDMI port of the device is connected to an HDMI source; causing the HDMI port to act as an HDMI sink; determining based on the comparison of the second voltage to the first voltage that the HDMI port of the device is connected to an HDMI sink; and causing the HDMI port to act as an HDMI source.