Motion Computing doesn’t ship the Tablet PC with the modem pre-installed as every customer uses a different Telco, so you have to install the required software to get it going.
If you buy the Sierra Wireless Broadband Modem option when you start Windows for the first time I box will pop up which says new ‘Mini PCI Card’ hardware found. Click do not ask me again, and click OK. (You will have to repeat this half a dozen times as there are different components to this part).
Installing the Sierra Watcher Software
Connect to the Internet either using a Wireless Network, or via the Ethernet port and then download the Sierra Watcher Software from the Motion Computing Support website here: http://www.motioncomputing.com/support/driver_download.asp
If you use Telstra as a ISP get the Telstra driver, if you use any other Telco such as Optus, Vodafone, 3 etc then choose the Generic Driver.

In Australia, you will get the fastest connection speed and largest coverage area with Telstra Next G, other Telcos will still work – but they just won’t be as fast.
After installing, power down and insert your SIM Card (under the battery) and then restart your Motion Computing Tablet PC. You should now be able to connect to the Internet with the Sierra Watcher software and have mobile broadband.