[    8.006060] usb 1-1.2: USB disconnect, device number 4
[    8.006241] qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
[    8.006254] qcserial 1-1.2:1.1: device disconnected
[    8.717132] usb 1-1.2: new high-speed USB device number 7 using ehci-pci
[    8.813134] usb 1-1.2: New USB device found, idVendor=03f0, idProduct=251d
[    8.813142] usb 1-1.2: New USB device strings: Mfr=3, Product=2, SerialNumber=0
[    8.813147] usb 1-1.2: Product: HP un2420 Mobile Broadband Module
[    8.813150] usb 1-1.2: Manufacturer: Qualcomm Incorporated
[    8.816354] qcserial 1-1.2:1.1: Qualcomm USB modem converter detected
[    8.816487] usb 1-1.2: Qualcomm USB modem converter now attached to ttyUSB0
[    8.817380] qcserial 1-1.2:1.2: Qualcomm USB modem converter detected
[    8.817471] usb 1-1.2: Qualcomm USB modem converter now attached to ttyUSB1
[    8.818261] qcserial 1-1.2:1.3: Qualcomm USB modem converter detected
[    8.818409] usb 1-1.2: Qualcomm USB modem converter now attached to ttyUSB2