This aircard is a winner. I used this card for a year before getting a USB type. It sustained a signal in the backwoods, highway, and airports. It can't be knocked out of the socket and travels easily. I used it on an IBM computer. If there is an issue, first make sure the card is fully engaged.
These are pricey and as with most aircards, you have to be mindful of usage, unless you are grandfathered into the unlimited plans.
Setup was easy and quick with self-installation via a CD. The bars gave an indication of signal strength and there were a few times when low strength hampered internet...