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Redirected from: USB-A

Definition: USB Type A


The common rectangular USB plug and socket. Type A is the port on the computer (the host). The ports on the peripheral or mobile device are Type B, Mini USB, Micro USB or Lightning. Before USB-C was introduced, Type A ports were found on every computer. Today, laptops are increasingly using only USB Type C, which is expected to eventually replace all USB connectors. See USB and USB Type C.