Most generic “450Mbps Mini USB Adapters” use one of these chipsets:
It is critical to download drivers only from official or trusted sources to avoid malware. 450m Wireless-n Mini Usb Adapter Driver Download
"Where’s the disc?" Elias muttered, rummaging through the cardboard box. There was no disc. Only a slip of paper with a URL that looked like a cat had walked across a keyboard. Most generic “450Mbps Mini USB Adapters” use one
If your device is a branded model, it is highly recommended to download drivers directly from the official support portals: TP-Link Download Center 450m Wireless-n Mini Usb Adapter Driver Download
For adapters using Realtek chipsets (like the RTL8192 series), you can find official software on the Realtek Download Page