If not, the driver is not correctly bound. Go to Device Manager > find "KYOCERA Digno BX2" > Update driver > Let me pick > Choose "Android Composite ADB Interface."
For those working in remote locations, using the Digno BX2 as a modem is a common practice. The are required to set up a USB network connection, allowing your laptop to utilize the phone’s mobile data. KYOCERA Digno BX2 Drivers Download
: Specialized driver for flashing firmware or recovering the device in emergency download mode. How to Download & Install If not, the driver is not correctly bound
Kyocera DIGNO BX2 поступит в продажу уже 26 ноября : Specialized driver for flashing firmware or recovering
Use a USB 2.0 port instead of 3.0 (blue) if the connection is flickering.
If you downloaded from an official Kyocera source, it is safe. Some AVs flag .inf driver files as heuristic risks. Always verify the digital signature: Right-click driver > Properties > Digital Signatures tab – look for "Kyocera Corporation."