Dell P2314T Multi Touch Monitor with LED - Manual (Page 50)

50 Appendix
Windows 8/Windows 8.1
Show desktop only on…
This option allows you to select the monitor to display content. You can choose to use
any one of the monitors connected to your computer—or in case of laptop, the built-in
display or the external display. This option is generally used when a laptop with a lower-
resolution display is connected to a higher-resolution external display and you want to
see the content only on the external monitor.
Windows Vista