The USB Promoter Group unveiled USB 3.2, a new version of the USB spec, in July 2017. Instead of the prior limits of 10 Gbps with USB 3.1 or 5 Gbps with USB 3.0, it enables two devices with USB 3.2 compatible chipsets to interact at 20 Gbps over a common USB-C cable. USB Type-C connectors include two mirrored sets of 12 pins, of which USB 3.1 only uses one side to achieve their orientation-free design. Similar to Thunderbolt 3, USB 3.2 uses both sets of pins to increase the connection's bandwidth.