We have a AT&T air card. Upgraded to a 881U. It connects to a USB port.
The Verizon card of the same type also works well.
Make sure which ever system you get that it will work good at your home base. In my area Verizon and Sprint are not reliable.
I've had it with HughesNet!!! Need Advice
I guess the air card is easily used on different computers. Great info from all.
Thanks for all the info folks.......Coffeeman