ICOM IC-7410 has a Type B USB port for audio I/O and for remote control.
[1] http://www.icomamerica.com/en/products/amateur/hf/7410/default.aspx
You can check if IC-7410 is successfully connected to you PC by the following manner.
% dmesg
[ 902.112054] usb 4-3: new full-speed USB device number 5 using ohci_hcd
[ 902.280364] hub 4-3:1.0: USB hub found
[ 902.282377] hub 4-3:1.0: 4 ports detected
[ 902.573128] usb 4-3.1: new full-speed USB device number 6 using ohci_hcd
[ 902.750271] input: Burr-Brown from TI USB Audio CODEC as /devices/pci0000:00/0000:00:12.1/usb4/4-3/4-3.1/4-3.1:1.3/input/input18
[ 902.750468] generic-usb 0003:08BB:2901.0005: input,hidraw3: USB HID v1.00 Device [Burr-Brown from TI USB Audio CODEC ] on usb-0000:00:12.1-3.1/input3
[ 902.825135] usb 4-3.2: new full-speed USB device number 7 using ohci_hcd
[ 902.937216] cp210x 4-3.2:1.0: cp210x converter detected
[ 903.013144] usb 4-3.2: reset full-speed USB device number 7 using ohci_hcd
[ 903.119452] usb 4-3.2: cp210x converter now attached to ttyUSB0
% cat /proc/asound/cards
2 [CODEC ]: USB-Audio - USB Audio CODEC
Burr-Brown from TI USB Audio CODEC at usb-0000:00:12.1-3.1, full speed
% ls -l /dev/snd/by-id
lrwxrwxrwx 1 root root 12 May 25 17:31 usb-Burr-Brown_from_TI_USB_Audio_CODEC-00 -> ../controlC2
% ls -l /dev | grep USB
crw-rw---- 1 root dialout 188, 0 May 24 17:53 ttyUSB0
Since the maximum serial communications speed of IC-7410 is 19200 baud, you may need to change the speed of the serial port of your PC.
% stty -F /dev/ttyUSB0 speed 115200 baud; line = 0; -brkint -imaxbel % stty -F /dev/ttyUSB0 19200 % echo -e "xfexfex80x00x17x41x42x43x44xfd" > /dev/ttyUSB0
The last line gives you the Morse code “ABCD”, which is represented in hex code as x41x42x43x44.