TP-Link N150 Wireless 3G/4G Portable Router with AP/WISP/Router Mode, Compatible with Select AT&T/Verizon/Sprint/T-Mobile USB Modems. It runs off internal rechargeable battery, or by plugging it into your laptop or wall outlet. I got this mini portable router for my business and wound up never using it. Its perfect for plugging into ethernet lines at work or hotels and having your own protected and encrypted wifi network, instead of the hotel’s unprotected network. Plus the wifi connection and speed will be a lot better than the hotels and your work’s because of how close you are to this wifi router. It is simply plug and play. You plug it into your available ethernet line or mobile modem and it grabs an IP address and starts working right away. This unit runs for $200 new on Amazon, i’m asking $50