The Novatel 2200 is a CDMA Mifi device for creating a local Wifi hotspot over a cellular connection. It's sold by Verizon, Sprint, and Virgin Mobile for use with their networks. I have a Virgin Mobile device because it allows me to buy service by the month, instead of two years at a time.
Won't charge with standard micro-usb cable
It really annoys me when companies break standards just to pry a few more dollars out of you. The Novatel 2200 will not charge with a standard USB charger and cable. It requires ~1.4 volts on pin X of the micro-USB cable. This pin should normally be open or grounded. Apparently this is a scam originated by Motorola, to require purchasing brand-name chargers. Of course, the reason for standardizing on micro-usb for cell phone chargers was to reduce the electronic waste.
Disables Wifi when plugged into computer
When you plug the device into your computer, and have the driver installed, then it will charge. It also then acts as a tethered modem, and disables the Wifi. At one time, you could edit the config file and use both functions at once, but that has been disabled (as of late 2009).