Samsung 204T - Manual (Page 12)

POWER S/W : Switch the monitor on and off.
POWER IN : Power cord, plugs into monitor and wall
receptacle.
DVI port : Connect the DVI cable to the DVI port on the back
of your monitor. (SOURCE : digital)
D-sub 15-pin port : Connect the signal cable to the 15-pin,
D-sub connector on the back of your monitor.
(SOURCE : analog)
Kensington Lock : The Kensington lock is a device used to
physically fix the system when using it in a public place.