LDW931 is a 4G LTE USB Wi-Fi router powered via USB port, functioning as both a Wi-Fi router and a USB modem when connected to a computer. It supports plug-and-play operation without requiring a CD or driver installation. Ensure your computer’s antivirus software or firewall allows the USB modem driver to install; otherwise, it will not function as a USB modem. This device does not include a SIM card. Users must insert a standard nano-SIM card from a local mobile operator to use the device. It provides high-speed mobile 4G LTE Internet access and can be used in vehicles via a standard USB port or outdoors with a power bank. The device supports both 3G and 4G networks and allows up to 10 Wi-Fi devices to connect simultaneously. Compact and portable, it is powered by USB and requires no additional setup. Frequency bands (U.S. version): FDD-LTE B2 (1900 MHz), B4 (1700/2100 MHz), B5 (850 MHz), B7 (2600 MHz). Compatible with networks across the United States, Canada, Mexico, Chile, Argentina, Bolivia, Colombia, Venezuela, Ecuador, Guatemala, Honduras, Nicaragua, Panama, Peru, Uruguay, Paraguay, and Dominica. Compatible with laptops, tablets, desktop computers, MacBooks, smartphones, and other Wi-Fi-enabled devices. Features a high-speed LTE chipset supporting TDD-LTE, FDD-LTE, and UMTS networks. Supports multiple languages. Plug-and-play — no CD-ROM or manual driver installation required. Supports Windows 2000, 2003, XP, Vista, 7, 8, 10, and Linux. Power input: 5V/1A Operating temperature: -10°C to 45°C Color: White Material: Plastic Dimensions: 88 × 28 × 12.3 mm Package includes: 1 × Wi-Fi Router Note: Actual product color may vary slightly due to lighting conditions and screen settings. Slight measurement variations may occur.