: On newer Windows versions, you may need to disable Driver Signature Enforcement to install older legacy drivers.

: Once connected, a new network adapter should appear in the Windows Device Manager IP Configuration

The BBU3900 USB driver is compatible with a range of operating systems and hardware configurations. We tested the driver with various USB ports and devices, and it worked seamlessly in all cases.

: You can perform an automatic upgrade by inserting a USB flash drive containing the required software and configuration files directly into the BBU's USB port (e.g., on the UMPT board). Ethernet Connection

Huawei BBU3900 does not typically require a standalone USB driver for its physical ports, as the onboard USB slot is primarily designed for automatic base station upgrades and data configuration using an encrypted USB flash drive.