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$ dmeg
[43234.465437] usb 1-1: USB disconnect, device number 27
[43234.768996] usb 1-1: new full-speed USB device number 28 using xhci_hcd
[43234.896823] usb 1-1: New USB device found, idVendor=1cf1, idProduct=0030, bcdDevice= 1.00
[43234.896848] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[43234.896860] usb 1-1: Product: ConBee II
[43234.896869] usb 1-1: Manufacturer: dresden elektronik ingenieurtechnik GmbH
$ ls /dev/ttyACM*
ls: cannot access '/dev/ttyACM*': No such file or directory
$ ls /dev/ttyUSB*
ls: cannot access '/dev/ttyUSB*': No such file or directory
$ uname -a
Linux TNAS-013581 4.19.165+ #138 SMP Mon Aug 2 18:22:49 CST 2021 x86_64 GNU/Linux