USB2RIG Radio USB Sound Card Connector Support PTT with VOX Control Radio Sound Adapter TTL/232 Level USB Sound Card Connector Adapter for KENWOOD YAESU dotcom Business Radio. Feature: Integrated Interface Solution, Versatile Level Support, Advanced PTT Control, Compact and Portable Design, Flexible Connectivity Options. Specification: Origin: Mainland China, Product size: about 53.00x24.00x14.00mm, Overview: USB2RIG is an interface device for converting audio/control between a computer and a radio. It is suitable for radio equipment. It supports TTL/232/CIV and uses the mature CM108 as a USB sound card conversion interface. It is compact and easy to install. Functions: Integrated interface, sound card serial port two-in-one, Support TTL/232 level, Support USB serial port PTT control, Mini design, Dual 3.5mm plug 4PIN function definition, Support 3.3v voltage output, Reserve spare function expansion port.