The NETGEAR MK63S was released at the end of March 2021. The only difference between the MK63 & MK63S is that the latter comes with a 90-day free trial of NETGEAR Armor. This is a security package that is powered by Bitdefender.
Both the NETGEAR MK63 & MK63S are packaged deals with One (1) Mesh WiFi 6 Router (MR60) & Two (2) Mesh WiFi 6 Satellites (MS60). If you are new to the mesh networking topic, mesh routers and satellites are used to expand coverage throughout the home or office. Satellites are placed opposite of the router, offering better signal strength and distance than just a traditional router alone.
Nighthawk MK63 Mesh System
The 3-pack mesh system MK63 & Netgear Nighthawk MK63S has the latest WiFi, that being WiFi-6. Some also refer to the newest wireless standard as AX Wireless, a.k.a. 802.11AX. With this system, you get up to 1.8 Gbps combined speed and coverage up to 4,500 sq. ft.
Nighthawk MR60 Mesh Router Only
The MR60 alone has 1 WAN port for connecting a modem. It also has 1 LAN port for a directly wired device such as a Smart TV or game console. It comes with its own power adapter.
NETGEAR Nighthawk MS60 Satellite Extender
Place the MS60 extenders on different floors or apart through the home and away from the router. The MS60 satellites have their own Ethernet port to connect data-intensive devices such as game consoles. Add more satellites to extend coverage more.