Some legacy versions of the Dnub-at1-236b- Driver are not WHQL-signed. Windows may block them.
The Dnub-at1-236b- Driver is proprietary. Search for your device manufacturer (e.g., “Siemens,” “Blackmagic Design,” “Promise Technology”) plus the phrase “AT1-236B legacy driver.” Do not search for the driver name alone.
The is a model identifier typically associated with USB Wireless (Wi-Fi) Adapters . These devices allow computers without built-in wireless capabilities—or those with faulty internal cards—to connect to Wi-Fi networks.
As of 2025, several major industrial partners have announced a deprecation of the AT1-236B chipset in favor of AT2-400 series (USB4/TBT4 compliant). However, due to long hardware lifecycles in manufacturing, this driver will remain critical for legacy equipment through at least 2030.