Having to install dongles on lots of computers is a bit of a pain and this one from Huawei seems to fill a need many in Nigeria might have. Huawei E355 3G and Wi-Fi USB Internet Modem Dongle – White
I’ve had a mobile hotspot with a battery inside but I can see there may be many situations where actually a small (translation) office or home could connect several WiFi devices through the same connection powered by USB either from a backup battery or a computer. Wonderful when you don’t need to mess about installing any software to make it work. If I get one, I’ll post feedback on how well it actually works in Nigeria.