FIDI FT-232RL USB interface chip. optocoupler 6N137 high-speed communications at rates up to 115200. Radio remote control interface support: full optical isolation, CIV 115200 remote support stable high-speed communication Complete signal support: Including TXD RXD DTR signals. To provide an and isolated amplifier interface, support for PTT and PTT input output control. Support for SQL control, signal is introduced,Custom high quality sound change. Plug and play, without any set, no external power supply,Standardized voice / data radio interfaces: ACC (DIN 8 specifications) Professional wave soldering process, a high level of technology.Modulus ground wiring structure optimization. Maximum Power Per Channel:10W amplifier: amp Support station model: For : FT-891 FT-991 FT-817857897780088008900100D support: IC-2710, 2720, 2820 and 703, 706, 7000(only data interface, PACKET) support: TM-V71,-480(DATA only), etc Hand machine: support Size Chart: 104 x 70 x 37mm/4.09 x 2.76 x 1.46inch color:Black Material:Metal Package Contents: 1 x U5-8X7 Link Connector 2 x Audio Cables 1 x USB Cable 1 x CAT Cable 1 x Data Cable 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.