Warranty: 1 YearFeatures: After You Connect The LDF81 To A Pc With The USB Interface ,you Can Send Or Receive E-mail Access The Network Through Wireless Connection And Download Files through Wireless Data Channels. As Wi-Fi Ap After The Device Accesses The LTE Network user Can enjoy The Wireless Network Through The Connection Between Wi-Fi LDF81, LDF81 Supports Up To 10 Wi-Fi Or 1 USB Users To Connect To The Wireless. Connected Up to 10 Wi-Fi enabled devices of the same times System Supported : Windows 2000/2003/XP/Vist/7/8/10,Linux, Android...(On Wi-fi) Technical Specifications: