looks good, but I do not trust that brand after they stole Cisco's own router OS code and branded it their own. Also they have been doing a buncha very shady things.
Another brand that should work with Meraki is ZTE. Sadly, USB stick are disappearing from retail and most portable LTE modems nowadays are MiFI. Integrated LTE modems from most brands even Cisco often lack complete LTE band support.
this is making it very difficult to have the LTE as backup. Not going to touch credit and have a contract for a backup connection for my homelab. Not worth it.
I purchased the below one, its unlocked so it should work with ATT/StraightTalk, although I used a T-Mobile sim in it. I have attached to laptop, desktop, MX64, and MX67, no issues found. Usually gets better speeds than your phone in the same area.