With 802.11ac Wave 2 becoming the Wi-Fi operational standard, large venues can now take advantage of the improved performance multi-user MIMO (MU-MIMO) technology brings to high-density environments. Xirrus XA4 Wave 2 high-density access points (APs) provide high Wi-Fi capacity in locations like convention centers, airports, train stations, and arenas. The plenum-rated XA4 AP features external antennas for custom coverage in structures with high ceilings, long hallways, or wide-open spaces.