This monitor driver is under certifying MS logo, and this installation doesn't damage your system.

The certified driver will be posted on Samsung Monitor homepage

http://www.samsung.com/

Click "Update Driver…" in the "Driver" tab.

Check the "Browse my computer for driver software" checkbox and click "Let me pick from a list of device drivers on my computer".

Click "Have Disk…" and select the folder (for example, D:\Drive) where the driver setup file is located, and click "OK".

Select the model that matches your monitor from the list of monitor models on the screen, and click "Next".

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Samsung 226CW manual