Huawei E3372-325 is a USB mobile broadband modem that connects a computer to LTE or UMTS data networks with a Mini-SIM card. Its USB 2.0 Type A connection plugs directly into a compatible USB port, making it a compact way to add cellular data connectivity to a computer.
For LTE FDD Cat 4, the modem supports downloads up to 150 Mbps and uploads up to 50 Mbps. The manufacturer also lists LTE TDD speeds up to 112/10 Mbps. Supported bands include LTE B1/B3/B7/B8/B20/B28/B38/B40 and UMTS B1/B8, providing the stated network options for mobile data access.
The modem measures 88 × 28 × 11.5 mm and includes two TS-5 interfaces for external antennas. These connections allow external antenna use where appropriate. The device combines its SIM interface, mobile network modem and USB connection in a small stick format.