Online Computer Tips - You can use the command netsh wlan show driver to get information about your wireless adapter including what types of Wi-Fi radio types are supported such as 802.11g
Analyze and Troubleshoot 802.11 Wireless Sniffing - Cisco
Enterasys WS-AP3660 Dual Radio 802.11 a/b/g/n Wireless Access Point | eBay
802.11ac vs 802.11n WiFi: What's The Difference?
Wi-Fi Standards, 802.11a/b/g/n/ac - Homenet Howto
Indoor Wireless Universal AP - Tri radio (802.11 b/g/n/ax 2x2 MU-MIMO, 802.11 a/n/ac/ax 2x2 MU-MIMO and 1x 802.11 a/b/g/n/ac Wave 2, 2x2 ), internal antennas, 2x 10/100/1000 RJ45 port, BT/BLE, 1x Type
Wireless: Determine if Computer Has 5GHz Network Band Capability (Windows) - GROK Knowledge Base