N compatible signal timing (av), N power management, N ddc (plug and play) – Asus PQ321Q User Manual
Page 34: Specifications

E
nCompatible signal timing (AV)
Screen resolution
Frequency
HDMI
1920 × 1080p
24Hz
Yes
50Hz
Yes
59.94Hz
Yes
60Hz
Yes
1920 × 1080i
50Hz
Yes
59.94Hz
Yes
60Hz
Yes
1280 × 720p
50Hz
Yes
59.94Hz
Yes
60Hz
Yes
720 × 576p
50Hz
Yes
720 × 480p
59.94Hz
Yes
60Hz
Yes
640 × 480p(VGA)
59.94Hz
Yes
60Hz
Yes
720(1440) × 576i
50Hz
Yes
720(1440) × 480i
59.94Hz
Yes
60Hz
Yes
nPower management
This monitor conforms to VESA DisplayPort power management.
nDDC (plug and play)
The monitor supports the VESA DDC (Display Data Channel) standard.
DDC is a signal standard for plug and play between monitors and computers. Information about resolution and other parameters is
exchanged between the two. This function can be used if the computer supports DDC and it has been configured to detect plug-and-
play monitors.
There are several types of DDC, depending on the communication method used. This monitor supports DDC2B.
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