Samsung LF19BKBLB-ZA - Manual (Page 18)

Use the VGA IN port to directly connect the monitor to a PC.
Connect to the DVI OUT port to display the same picture on another monitor such as the projector.
(For presentation purposes)
Use the USB port to connect an external storage device (DSC, MP3, external storage, etc.).
Connecting to one Host PC from many client device is possible only when virtualization solution like
vmware is installed in Host PC
Connecting Headphone
Note
You may connect your headphones to the monitor.
1. Connect your headphones to the Headphone connection terminal.
Connecting MIC
Note
You may connect your microphone to the monitor.
1. Connect the microphone cable to the MIC port on the monitor.
Connections