4 Morse Keyes or computer cw output to any of 4 different tranceivers.
Select any of 3 different microphones and send it to any of 4 different tranceivers.
USB Soundcard with 4 volume controls, serial port PTT, Serial Port (TTL/RS232) and 2 usb outputs to connect other devices.
Get 4 Serial Ports for any use. Uses industry standard FTDI chips.