Warranty: 1 Year Features: 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 Connect Up to 10Wi-fi Enabled devices of the Same time System Supported: Windows2000/2003/XP/Vist/7/8/10, Linux, Andorid...(On wi-fi) Technical Specifications: