Built-in 3G/4G modem for seamless internet access through 4G mobile communication or WAN port. Compatible with local 4G SIM cards, ensuring connectivity in various regions including EU, Asia, and Africa. Supports multiple frequency bands: 4G (B1/B3/B5/B8/B34/B38/B39/B40/B41) and 3G (B1/5/8) for versatile network compatibility. Requires network configuration via network cable or SIM card for optimal performance. Hot-swapping of SIM cards is not supported; always insert the SIM card before powering on the device. This 4G router is designed for reliable internet access in diverse locations. To ensure proper functionality, it is essential to insert the SIM card before connecting the power supply. The device supports a wide range of frequency bands, making it suitable for various network environments. If you encounter any issues during setup, please refer to the provided setup guide or contact online support for assistance. Color: Black Material: plastic Package Contents: 1*4G WIFI LTE Router 1* Cable