An AV signal access controlling apparatus is provided and mainly comprises an exterior connector being connected to a controller, a voltage level generator, a S connector (independent video connector), a RCA (Radio Corporation of America) connector, and an USN connector. When the exterior connector is connected to an AV storage apparatus, the voltage level generator outputs a voltage level to the AV storage device and a voltage level comparison proceeds. Thus the AV storage apparatus permits to proceed signal transmission with the controller. When the controller is configured to transmit signals to the AV storage apparatus, a delay of 51.mu. second (51 .mu.s) is required for simulating a transmission rate of 19200 bps, thus the AV storage apparatus permits to transmit the audio and video signals via the S connector, the RCA connector, or the USB connector.