If the router is heavily restricted, you may need to flash a "Global" or "General" firmware version. HUAWEI LTE Cat.4 WiFi Router (B311-221) - wifi-stock.com
Try a different USB port or replace the cable. Ensure drivers are visible in the Windows Device Manager. Huawei Router B311-221 Unlock Firmware
Practical step-by-step (safe, general approach) If the router is heavily restricted, you may