52Chapter 3.Using the computerConnecting an External Display DeviceIf you connect an external display device such as a monitor, TV,projector, etc., you can view the picture on the wider screen of theexternal device when you give a presentation or watch a video ormovie.The computer provides an analog monitor port (D-SUB) and adigital video/audio port (HDMI).The visual quality is sharper when a display device is connectedthrough 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 visualquality.Before you start, check the port and cable of the externaldisplay device and then connect the display device to thecomputer.About the connection cableUsers should additionally purchase the necessary connectioncables.D-SUB Cable HDMI Cable