The RBK30 Orbi Tri-band WiFi system is made up of an AC2200 router along with wall-plug setup and can cover an area of up to 3,500 sq.ft. On the other hand, the RBK40 Orbi Tri-Band shares the AC2200 router but is designed to cover an area of 4,000 sq.ft.
The Netgear Orbi is made to offer a reliable WiFi coverage across your home under a single WiFi name/SSID. It employs the 802.11ac that supports speeds of up to 2.2GBps. The unhindered coverage is something that would come in handy while playing a multiplayer game or perhaps streaming a video in 4K resolution. Furthermore, a setup like this will also avoid confusion created by multiple repeaters and WiFi names.