The SpeedTouch 121g Wireless USB Adapter is a wireless networking device designed to allow computers to connect to Wi-Fi networks. It was produced by Thomson (now part of Technicolor), and it supports Wi-Fi standards such as 802.11b/g. The adapter connects to a computer via a USB port, providing wireless internet connectivity, typically for desktop PCs or laptops that don't have built-in Wi-Fi.
The Windows driver for the SpeedTouch 121g Wireless USB Adapter is software that enables your Windows operating system to recognize and use the device properly. Without the correct driver, the adapter won't function correctly, and you won't be able to connect to wireless networks.