l Cek keberadaan modem menggunakan perintah dmesg
rito@rito:~> dmesg | grep usb
usb 1-2: new full speed USB device using uhci_hcd and address 2
usb 1-2: new device found, idVendor=12d1, idProduct=1003
usb 1-2: new device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-2: Product: HUAWEI Mobile
usb 1-2: Manufacturer: HUAWEI Technologies
usb 1-2: configuration #1 chosen from [...]
