To use your software on more than one computer (for example, a desktop at the office and a laptop while traveling), just install the Dongle drivers and the software on both computers. Keep the Dongle itself plugged into the computer you need to use. When you need to switch computers, take the Dongle out of the first computer and insert it into the other computer.
Please note: you can only use the Dongle at one computer at a time. The Dongle must be inserted into a computer in order to use the software.