Samsung PE40C Manual page 63

2
Connecting and Using a Source Device
Connection Using an DP Cable
Precautions for using DP
To increase the standby power capacity, the product stops DP communication when it is turned

off or in power-saving mode.
If the product in dual monitor mode is turned off or goes into power-saving mode, monitor
setting changes may not be updated. As a result, screen output may not be displayed properly.
In the occurrence of this issue, set
Some graphics cards that are not compliant with the DP standard may prevent the Windows

Booting/Bios screen from being displayed when the product is in power-saving mode.
If this is the case, make sure to turn on the product first before turning on your PC.
DP IN
Max Power Saving to Off before using the product.
2 Connecting and Using a Source Device
63