USBACAB230 cable is provided through the USB , programming cable, the connection and RS232 conversion and running on your computer under the control of the computer's USB to simulate the traditional port ( commonly known as the port). which use existing programming software,communications software and software and other applications. The working power of the cable from the USB port, longer by the programming port powered. two-color light-emitting diodes on the converter box to indicate the data transceiver . USBACAB230(usb-dvp) programming cablefor DVP series , the COM1 port of the .