The above models require a 2 pin programming cable. Although its appearance is that of a K1 Kenwood style programming cable where the UART chip is in the USB connector, it is Not compatible. Where many K1 cables have the USB UART chip in the USB connector, these radios have the chip inside the radio.  The cable required is straight through and no special drivers are required.   Important Note:  Using a K1 cable from a Kenwood, Wouxun, or even another Baofeng will fail.   Some radios ship with the programming cable. Check the product listing before purchasing.