Samsung SP-A400B - Manual (Page 24)

Connect [PC IN] port on the rear side of the projector to the monitor output port of the PC using a PC video cable.
When connections are all completed, connect both power cords of the projector and the PC.
This product supports plug and play, therefore you do not need to install a driver on your PC.
Using the Projector
Turn on the projector and press the [PC] button to select <PC>.
If PC Mode is not available, check PC video cable is in place.
Turn on the PC and set the PC Environment when necessary.
Adjust the screen.( Auto Adjustment )
Sound comes out from PC speakers.
Connecting Video Devices (Monitor, TV, etc.)
- When using the D-sub (analog) output through another video device (monitor, TV, etc.).
Connect the MONITOR OUT terminal of the projector and the D-sub terminal of the video device using a
D-sub cable.
After connecting them, turn on your projector and the video device (monitor, TV, etc.).