USB3.0 (Universal Serial Bus 3.0) connector socket and plug matched with same

The invention relates to the technical field of connectors, in particular to a USB (universal serial bus) 2.0 connector socket and a plug matched with the same. The USB 2.0 connector socket comprises an insulation tongue piece and four socket signal terminals of the existing USB standard, on the basis of not changing the original USB structure standard, a socket power source terminal is additionally arranged by a first accommodating space of the USB 2.0 connector socket, the arrangement of the socket power source terminal does not affect the normal use of the USB 2.0 connector socket, and on the premise of USB 2.0 standard compatibility, space and material are saved. The plug matched with the USB 2.0 connector socket disclosed by the invention comprises an insulator, a plug power source terminal, a cable, a fixing shell, a plug shell and an insulation shell, and through the specially designed plug power source terminal, the plug can be plugged with the USB 2.0 connector socket to realize power source signal transmission, and the original power source socket is saved.