802.11b is one of the many Wi-Fi standards developed by the Institute of Electrical and Electronics Engineers (IEEE). It was released in 1999 with 802.11a as the initial 802.11 specifications on the first update, published in 1997.
Both 802.11a and 802.11b wireless transmission standards are the same as local area networks, but 802.11a uses a 5 GHz frequency, 802.11b operates in a 2.4 GHz band.
The 802.11b Wi-Fi standard provides a wireless range that is roughly 35 meters indoors and 140 meters outdoors. At the same time, it supports transfer rates up to 11 Mbps, or 1.375 megabytes per second.
In the late 1990s, it used to be very fast if we talk about the Internet speeds of that time, which were available in most homes and businesses. So this speed was typically only a limitation within a network of internal data transfers.
802.11b also provided the same data transfer rates as 10Base-T Ethernet, but it was much slower than newer wired LAN standards, such as 100Base-T and Gigabit Ethernet.
In 2003, IEEE published 802.11g standard, which provided wireless transfer rates up to 54 Mbps.
802.11g consolidated all earlier 802.11 “a” and “b” specifications into a single standard that was backward-compatible with 802.11b devices. Most Wi-Fi devices used 802.11g in the 2000s until the 802.11n standard was published in 2009.