Attention: Because "ZELLO" has officially changed the control method, Currently does not support the use of the mouse middle button key control. Only support vox control We send by default: use 6-pin 16-pin conversion board If you need to use the 6-pin 26-pin conversion board, please write to us. TX: RED"andRX:B/G : This is LED status indictors. When R1 controls an external radio, R1 lights up red. When the external radio receives the signal, R1 blue light or green light. Switch position-MOTO: Connect 6-pin to 16-pin converter board, used by Motorola radio stations16-pin interface,(Default accessories) Connect 6-pin to 26-pin converter board, used by Motorola radio stations26-pin interface,(Optional accessories) Switch position -Y, K, C: Direct connection, YAESUKenwood ICOM ... Radio use 6-pin TNC interface Switch position-ASL OFF: AllStarLink is disabled, the USB sound card chip stops detecting COS / CTCSS and controlling PTT. Switch position ASL ON: AllStarLink is enabled, USB sound card chip detects COS / CTCSS and controls PTT. Note2: ASL ON, Only use AllStarLink to connect with Raspberry Pi. In other states, the switch position must be in ASL OFF !!! DIN 6 Interface: Use 6-pin Cable.R1 to connect YAESU / Kenwood / ICOM-radio; Use 6-pin cable and "6-pin-16 pin conversion board". R1 connect Motorola-radio; Use 6-pin cable and "6-pin-26 pin conversion board". R1 connect MotoTRBO-radio; USB Audio: USB-Radio Interface, Connect to PC or Raspberry Pi; USB Detection: USB mouse middle button detection, connect to PC when running ZELLO or YY...; USB Serial Port: USB serial port, connect to PC when running ECHOLINK / PSK31 / SSTV ...; Package Accessories list 1X R1 controller 2X USB-D Cable 1X 6 PIN Cable 1X 6PIN-16PIN conversion board