Samsung NP270E5E-K01US - Manual (Page 53)

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Chapter 3.
Using the computer
Connecting an External Display Device
If you connect an external display device such as a monitor, TV,
projector, etc., you can view the picture on the wider screen of the
external device when you give a presentation or watch a video or
movie.
The computer provides an analog monitor port (D-SUB) and a
digital video/audio port (HDMI).
The visual quality is sharper when a display device is connected
through the HDMI port rather than the analog monitor port
(D-SUB) port. Therefore, when multiple ports are supported,
connect a display device to a port that provides the better visual
quality.
Before you start, check the port and cable of the external
display device and then connect the display device to the
computer.
About the connection cable
Users should additionally purchase the necessary connection
cables.
D-SUB Cable HDMI Cable