Can not find ttyUSB0 in TX2

I want connect my TX2 to Dji UAV,which need to connect to TX2 as onboard computer with usb-ttl cable.While I cannot find ttyUSB0 device.Please help me solve the issue.

Serial UARTs with FTDI chipsets should be supported without addition, but others will need to have the kernel module added. If you run “lsusb” you will see and ID of the form “0955:7c18”. To limit your lsusb to just this device, and to get verbose output, adjust for your ID and use this command:

sudo lsusb -d 0955:7c18 -vvv

Post the output from that. Also show what you see change in “dmesg --follow” while you insert the USB cable.