Is deco x50 the only tp link model to have the SIM card model?
TP link
AX3000
NX510v (even has a telephone port)
Deco X50 5G
Deco X50 4G
AX1800
Archer NX200
Deco X20 4G
D-Link also has a few
Better to stick to these since it has local warranty.
I messed with others unlocked and outside region CPE's as well and came to the conclusion, spend one time good one better than trying to save some and then get bitten down the road.
A small tip:
You do not need to use the given 3 pin power plug for them: get a PD to AC 5.5x2.5mm cable, and even a powerbank will power this baby up.
12V2A max, hence any port output above 24W will serve this fine.
I have however managed to power up CPE with a 18w powerbank via USB C port. It's not power hungry at all, this thing.
So now my 65w wall charger powers my NX510v via USB C, and one of the USB A is connected to a router cooler placed below it.