Samsung NV30CH0Q0B - Manual (Page 73)

60 Users Manual
3. Click the monitor '2' icon, select the 'Extend my Windows desktop onto this
monitor' check box, and then click Apply.
4. When the configuration is complete, click OK on the left side of Troubleshoot.
The primary display device(the LCD) is indicated as '1', and the secondary display
device is indicated as '2'. Now you can view the screen through two monitors.
When using Dual View, it is recommended that LCD is kept as '1', the primary
display device.
2 : Secondary 1 : Primary