Universal Serial Bus 4, sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB data communication standard. The USB Implementers Forum originally announced USB4 in 2019.
USB4 enables multiple devices to dynamically share a single high-speed data link. USB4 defines bit rates of 20 Gbit/s, 40 Gbit/s and 80 Gbit/s.
