The 802.11g/b Wireless LAN Client Adapter Windows driver is software that allows a computer to communicate with a wireless network using the 802.11g and 802.11b Wi-Fi standards. These standards are part of the IEEE 802.11 family, which governs wireless networking. Specifically, 802.11b and 802.11g refer to wireless networking standards that were widely used for Wi-Fi connections before the advent of faster standards like 802.11n and 802.11ac.

• 802.11b supports speeds of up to 11 Mbps.
• 802.11g supports speeds of up to 54 Mbps and is backward compatible with 802.11b.

A Wireless LAN Client Adapter is a device (usually a USB dongle or a network card) that allows a computer or laptop to connect to Wi-Fi networks. This adapter needs specific drivers to function correctly with the computer's operating system, especially if the adapter is using a specific chipset.