The DisplayPort AUX channel is a half-duplex bidirectional data channel used for miscellaneous additional data beyond video and audio (such as I2C or CEC commands) at the device manufacturer's discretion. AUX signals are transmitted across a dedicated set of twisted-pair wires. DisplayPort1.0 specified Manchester encoding with a 2Mbaud signal rate (1Mbit/s data rate). DisplayPort1.2 introduced a second transmission mode called FAUX (Fast AUX), which operates at 720Mbaud with 8b/10b encoding (576Mbit/s data rate). This can be used to implement additional transport protocols such as USB2.0 (480Mbit/s) without the need for an additional cable, but has seen little practical use as of 2018.