20-sim 4C only works on computers that will meet the following requirements:

•Operating System: Windows XP, Vista, 7 or 8.

•Available Disk Space: 350 MB.

•Ethernet: an ethernet connection is required for external targets.

Further requirements for using 20-sim 4C:

•20-sim 4.1.2.4 Professional (or higher) installed on the same computer.

•A valid 20-sim 4C license. Contact your local distributor to obtain a valid license. Note that 20-sim 4.1 (or higher) Professional and the 20-sim 4C 2.1 have separate licenses!