What country and what carriers are you interested in connecting to using 4,66,12,71?Is there a *good* list of known working LTE mini-pci-e cards that support bands 4/66,12, and ideally 71? I'm only getting partial band support in the existing LTE modems and really need to find something. I could live with a USB modem in some circumstances, but really needing an outdoor device so the mini pci-e is about 90% required.
Have a reasonably priced source?I import Quectel modems personally. For your application I would use the EC25-AF It's a Cat4 that supports B2/B4/B5/B12/B13/B14/B66/B71 I use it with Verizon, T-Mobile, AT&T with no problems.US/T-Mobile.