[ 1853.359595] usb 1-4: USB disconnect, device number 21
[ 1855.975241] usb 1-4: new full-speed USB device number 22 using xhci_hcd
[ 1856.105685] usb 1-4: New USB device found, idVendor=0483, idProduct=5740
[ 1856.105693] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1856.105698] usb 1-4: Product: STMBL Virtual ComPort
[ 1856.105702] usb 1-4: Manufacturer: STMicroelectronics
[ 1856.105705] usb 1-4: SerialNumber: 395F376D3233
[ 1856.106023] usb 1-4: ep 0x82 - rounding interval to 1024 microframes, ep desc says 2040 microframes
[ 1856.106665] cdc_acm 1-4:1.0: ttyACM0: USB ACM device