Acer RT280K User Manual - Page 16

4 English Power saving The monitor will be switched to "power saving" mode by the control signal from the display controller, as indicated by the amber-colored power LED. Mode On Power saving LED light Blue Amber The power saving mode will be kept until a control signal has been detected or the keyboard or mouse is activated. The recovery time from "power saving" mode back to "on" is around 3 seconds. Display Data Channel (DDC) To make installation easier, so long as your system supports the DDC protocol, the monitor is able to plug-and-play. The DDC is a communication protocol through which the monitor automatically informs the host system about its capabilities; for example, supported resolutions and corresponding timing. The monitor supports the DDC2B standard.