Summary: Doesn't work with Pantech. Their tech support says it's because it "doesn't support" 4G modems, but several other 4G modems are listed as being supported, including the 4G Pantech UML290. The unit's BIOS also has options for 4G modems. The manual mentions them as well.
Summary: I have tried several modems. They did not work with this device. Novatel Wireless U760, Huawei E1550, etc .. I have spent two nights trying to configure different firmwares and different modems. It does NOT work.