What are the advantages of a dual-band router? - Quora
Dual-Band vs Tri-Band Router: Which One Is Best For Your Home?
Amazon.com: WAVLINK WiFi Router AC1200, Dual Band 5GHz+2.4GHz Wireless Router with Gigabit WAN/LAN, Long Range Coverage for Home and Office, Supports Router/Access Point/Repeater Mode : Electronics
Linksys 802.11B Wireless Router in the Wi-Fi Routers department at Lowes.com
Amazon.com: WAVLINK WiFi Router AC1200, Dual Band 5GHz+2.4GHz Wireless Router with Gigabit WAN/LAN, Long Range Coverage for Home and Office, Supports Router/Access Point/Repeater Mode : Electronics
Linksys Official Support - What is a Tri-Band Router and how does it work?