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The Wi‐Fi Alliance separated the introduction of 802.11ac wireless products into two phases (“wave”), named “Wave 1” and “Wave 2”. Initially, (2013) products were based on the IEEE 802.11ac Draft 3.0; it supported three spatial streams (with three antennas). Wave 2 certification became available in 2016; Wave 2 products achieve higher bandwidth and system capacity than Wave 1 products. Wave 2 included newer features such as MU‐MIMO, wider 160 MHz channel width support, additional 5 GHz channels, and four spatial streams (with four antennas; compared to three in Wave 1 and 802.11n) (IEEE's 802.11ax supports eight.) See Table 2.6 for a “Cheat Sheet” on 802.11ac concepts and system throughput.