USB‑C, or USB Type‑C, is a 24-pin reversible connector that supersedes all previous USB connectors, which were designated legacy in 2014. This connector also supersedes Mini DisplayPort and Lightning connectors. USB-C is widely used for multiple purposes: exchanging data with peripheral devices, such as external drives, mobile phones, keyboards, track-pads, and mice, or between hosts; transferring A/V-data to displays and speakers; or powering peripheral devices and getting powered by power adapters, either through directly wired connectors or indirectly via hubs and docking stations. This connector type can be used for other data transfer protocols besides USB, such as Thunderbolt, PCIe, DisplayPort, and HDMI. It is considered extensible, allowing the support of future protocols.