Samsung LS21BRBAB-XAA - Manual (Page 31)

Input
The default setting may different depending on the selected Input Mode (input signal
source selected in External Input List) and the selected resolution.
Menu Description Play/Stop
Source List
Use to select PC or other external input sources
connected to the Monitor.
Use to select the screen of your choice.
1) Analog
2) Digital
3) Video
4) S-Video
Edit Name
Name the input device connected to the input jacks to
make your input source selection easier.
1) Analog
2) Digital
3) Video
4) S-Video
Picture (Analog / Digital : PC)