I decided to add another reply - as a full-time RV’r, I really am not interested in cellular modems at all! If I was somewhere without any wifi access for very long, I would go with Starlink - due to cellular costs and throttling. Between me and my wife we have 100GB of cell phone hotspot data - that would get us through almost 20 days of my average usage (regularly use 5GB per day due to Broker investment platform). If I was going to be boondocking in the middle of nowhere, there probably would not be any cell service either!
I want to change my vote! Neither 5G or 4G LTE is important to me at all! I love the Slate AX, except for a few issues:
WAN - I have a 150’+ long buried ethernet from the house to the RV - the Slate could not negotiate a Gigabit connection (we have Gigabit Ethernet). A cheap TPLink AX router negotiates to Gigabit just fine, and a cheap NetGear Switch always stays Gigabit - so I used the Switch, and then plugged the Slate AX into it.
Antennas - I have a King external antenna from the RV Factory installed. The King antenna works great, the King router sucks! An external antenna with SMA connection would be a plug and play replacement to the King.
Power source - we have a 1500W invertor, so powering off the existing 120V outlets would be fine - but if it could be wired directly to the 12V system, it would use way less battery power when not on shore power. No USB, or especially USB connections anywhere near where the external antenna wire comes into the RV, but 120V or 12V is readily available.
2.5G WAN port - I will be testing a new switch with 2.5G WAN port - if it works, having 2.5G WAN port in the router would be awesome to give me Gigabit ethernet dedicated for my laptop, and still have a lot of bandwidth available to our WiFi devices. (of course if I am using the external antenna for WiFi repeating, I would not have an ethernet WAN connection anyway).
VPN - I use an OpenVPN Access Server to connect to my home network/server when travelling - even the new Beryl AX only gets 120MB with OpenVPN, which is very disappointing when I may be connected to 2.5GB network/Gigabit Internet.
Internal antennas - although I have been very happy with the wifi coverage inside the large 5th Wheel RV - I am concerned about the small form factor antennas - am totally fine with longer MU-Mimo antennas.