Why 802.11ac Will Kill The 5 GHz Wi-Fi Band - SmallNetBuilder
Should I use 2.4 GHz or 5 GHz WiFi? | CenturyLink
USB WiFi Adapter, EEEkit 1200Mbps 2.4GHz/5GHz Dual Band Fast USB3.0 High Gain 5dBi Antenna 802.11ac WiFi Dongle Wireless Network Adapter for Desktop Laptop Supports Windows Mac Linux - Walmart.com