Combines audio codec, CAT control and PTT switch using a single USB connector to computer | Works for HF, VHF, UHF. Use it with FT8, FT4, JS8Call, RTTY, SSTV, WinLink, APRS, VaraHF, VaraFM, Soundmodem | Allows fully featured CAT control in capable transceivers and reliable adjustments free PTT with HTs and basic mobile radios | Pre-made transceiver cables are available for popular Yaesu, ICOM, Kenwood, Elecraft, Baofeng, Xiegu, Lab599 and other brands. Trivial homebrew cable build with instructions in the community forum. | The interface works with all major OS flavors: Windows, MacOS and Linux. Driver update may be needed in some systems - see instructions for the link. | CAT interface in this listing is pre-configured for logic levels and can be changed to RS-2323, TX-500 or CI-V. See digirig website for additional information. | Tutorials, troubleshooting guide, vibrant community forum are available if you have any questions or. You can also post in Q&A section of this listing if you have a question or need help | Thank you for considering Digirig. I hope to see you on the air. 73 de K0TX