Samsung 400Pn, 400P Owner's Manual page 111

This function prevents a random user from freely using MagicNet, by placing limits on the operation of
functions according to the account privilege.
3. Update
You can update a monitor's MagicNet from the server.
However, this function only works when it is connected to a server/monitor with MagicNet Ver 2.0 or higher.
4. Controlling Local Storage Devices/USB File Control of Monitors
You can copy or delete files to a monitor's local storage device or via USB connected to the monitor.
5. Schedule Pause
This function pauses the ongoing schedule in the monitor, and is useful in the event of urgently needing to
conduct other work.
Press the buttons in the order of [+100]-[8]-[2]-[4]-[ENTER] on the monitor with the remote control, and
the schedule will pause temporarily.
To resume the temporarily paused schedule, press the buttons in the order of [PRE-CH]-[8]-[2]-[4]-
[ENTER]on the remote control.