[MINI TRAVEL WIRELESS ROUTER] Convert a public network(wired/wireless) to a private Wi-Fi for secure surfing networking. Tethering, 3G/4G USB Modem Compatible. Powered by any laptop USB, power banks or 5V DC adapters (sold separately). 39g (1.41 Oz) only and pocket friendly. [OPEN SOURCE & PROGRAMMABLE] OpenWrt pre-installed, USB disk extendable. [VPN CLIENT & SERVER] OpenVPN and WireGuard pre-installed, compatible with 30+ VPN service providers. [LARGER STORAGE & EXTENSIBILITY] 128MB RAM, 16MB NOR Flash + 128M NAND Dual flash, dual Ethernet ports, UART and GPIOs available for hardware DIY. [PACKAGE CONTENTS] GL-AR300M (Shadow) mini router (1-year Warranty), USB cable, User Manual.