$ dmesg
(略)
[ 2885.014765] usb 1-1.4: new full-speed USB device number
29 using dwc_otg
[ 2885.147893] usb 1-1.4: New USB device found,
idVendor=1a86, idProduct=7523
[ 2885.147906] usb 1-1.4: New USB device strings: Mfr=0,
Product=2, SerialNumber=0
[ 2885.147915] usb 1-1.4: Product: USB2.0-Serial
[ 2885.148809] ch341 1-1.4:1.0: ch341-uart converter
detected
[ 2885.150542] usb 1-1.4: ch341-uart converter now
attached to ttyUSB0
$ ls /dev/ttyUSB*
/dev/ttyUSB0
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