Quectel EC25-E LTE kit reviews
Quectel EC25-E LTE kit
1x Quectel EC25-E modem (mPCIe form factor)
1x LTE antenna
1x LTE pigtail
EC25-E chip is locked to Europe, the Middle East, South Korea, Thailand, and India. It won't work in other regions.
This modem works well with OpenWRT in QMI mode. It achieves about 100Mbit/s in practice.
Consider buying an additional antenna to increase bandwidth.
Alternatively, you can consider buying an external TRB140 modem