802.11g is an IEEE standard Wi-Fi wireless networking technology. Like other versions of Wi-Fi, 802.11g (sometimes simply called "G") supports wireless local area network (WLAN) communications between computers, broadband routers, and many other consumer devices.
Explained: WiFi 802.11 a/b/g/n/ac
G was ratified in June 2003, replacing the older 802.11b ("B") standard. 802.11n ("N") and newer standards eventually replaced G.
802.11g Wi-Fi supports a maximum network bandwidth of 54 Mbps, significantly higher than the 11 Mbps classification of B and significantly lower than the 150 Mbps or higher speeds of N.
Like many other forms of networking, G cannot reach its theoretical maximum capacity in practice. 802.11g connections typically reach an application data transfer rate limit of between 24 Mbps and 31 Mbps (with the remaining network bandwidth used for the communication protocol overhead).
