TP-Link Portable 3G Wireless N Router fits in your pocket, draws power from USB | Engadget
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Amazon.com: USB WiFi Extender, Portable 300Mbps Dual Antenna Wireless USB WiFi Adapter, WiFi Signal Range Extender Wireless Router Repeater AP Amplifier IEEE802.11 b / g / n for Laptop Desktop : Electronics
300mbps 2.4g Usb Wireless Router Wifi Repeater Usb Powered Wi-fi Range Extender Signal Amplifier Dual Antennas - Routers - AliExpress
TP-Link N150 Wireless 3G/4G Portable Router with AP/WISP/Router Mode, Compatible with Select