Dual-mode DisplayPort (also known as DisplayPort++) allows devices to directly output single-link HDMI and DVI signals using a simple passive adapter that adjusts from the different connector and the lower voltages used by DisplayPort. When a dual-mode transmitter detects that a DVI or HDMI passive adapter is attached, it switches to DVI/HDMI transmission mode which uses the 4-lane main DisplayPort link and the AUX channel link to transmit three TMDS signals, a clock signal and Display Data Channel data/clock. Dual-mode ports are marked with the DP++ logo; most DisplayPort graphics cards, as well as all Thunderbolt ports with mDP connector, support this mode.