Samsung SyncMaster 204BM User Manual page 14

DVI IN port : Connect the DVI Cable to the DVI IN port on the
back of your monitor. (SOURCE: Digital)
RGB IN port :Connect the signal cable to the RGB IN port on
the back of your monitor. (SOURCE: Analog)
Kensington Lock : The Kensington lock is a device used to
physically fix the system to something when using it in a public
place. (The locking device has to be purchased separately.)
For using a locking device, contact the place of purchase.
Stand Stopper : Remove the fixing pin on the stand to lift the
monitor up and down.