Usage Tips:1. Integrated interface, sound card serial port two-in-one 2. Support TTL/232 level 3. Support USB serial port PTT control (support PTT with Control (Data audio, like FT8, JT65, etc.)) 4. Mini design, the size is only 53x24x14mm (excluding the protruding part of the USB ) 5. Dual 3.5mm plug 4PIN function definition, can flexibly connect different devices USB2RIG is an interface device for connecting a computer to a radio station for audio/control conversion. It is suitable for radio equipment such as , , and ICOM. It supports TTL/232/CIV and uses the CM108 as a USB sound card conversion interface. It is compact and easy to install. Support 3.3v voltage output (such as LAB599 TX500) Reserve spare function expansion port. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:plastic Package Contents: 1 x USB Sound Card Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.