TP-LINK Archer C7 Wireless AC1750 Dual Band Gigabit Router, 450 Mbps on 2.4 GHz + 1300 Mbps on 5 GHz, 1 USB Port, IPv6, Guest Network - Newegg.com
Dual Band Repeater 2.4ghz 5ghz Wifi Router | 4w 2.4ghz Wifi Signal Booster - Wifi - Aliexpress
Linksys Official Support - The two types of dual-band routers
WiFi For Beginners - 5 Things You Must Know With Routers - GL.iNet
5 GHz Wi-Fi Isn't Always Better Than 2.4 GHz Wi-Fi
Amazon.com: WAVLINK WiFi Router AC1200 Dual Band Router 2.4GHz and 5GHz Wireless Internet Router for Home,100Mbps WAN/LAN Ethernet Port Wireless Router,4 x 5dBi Foldable Antennas,Supports Router,WISP,AP Mode : Electronics
2.4GHz vs. 5GHz WiFi: What's the difference and how to use it?