Used item TP-Link 300Mbps Wireless 3G/4G Portable Router with Access Point/WISP/Router Modes (TL-MR3020), Travel-sized Design, with Mini USB Port, Internal Antenna
Complete Review of TP-LINK TL-MR3020 - GeekAct
TL-MR3020 Portable 3G/3.75G Wireless N Router - TP Link