HP EliteBook 2540p Notebook PC - Manual (Page 57)

Using the DisplayPort
The DisplayPort connects a digital display device such as a high-performance monitor or projector. The
DisplayPort delivers higher performance than the VGA external monitor port and improves digital
connectivity.
▲ To connect a digital display device, connect the device cable to the DisplayPort.
NOTE: If a properly connected external display device does not display an image, press fn+f4 to
transfer the image to the device. Repeatedly pressing fn+f4 alternates the screen image between the
computer display and the device.
Video 45