Eizo ColorEdge CG221 User Manual page 25

The Priority Input Signal
This function is used to select which PC will have priority to control the monitor when
utilizing two PCs. The monitor constantly checks the input signals and switches
automatically in accordance with the "Input Priority" setting (see table below). Once a
priority is set, whenever a change of signal is detected at the selected input, the
monitor will switch the input to that signal.
In this case of only one signal being present at either input, the monitor automatically
detects and displays that signal.
Priority
Settings
1 If signals from both inputs are present, the monitor gives
(SIGNAL1)
preference of Signal 1 in the following cases.
2 If signals from both inputs are present, the monitor gives
(SIGNAL2) preference to Signal 2 in the following cases.
Manual The monitor will not detect signals automatically in this mode.
Select the active input by pressing the input signal selection button
on the monitor's control panel.
* When "1" or "2" is selected, the power saving mode of the monitor activates only
if both PCs are in power saving mode.
Performance
When the power of the monitor is turned ON.
When the signal input to Signal 1 is changed even if active
input was Signal 2.
When the power of the monitor is turned ON.
When the signal input to Signal 2 is changed even if active
input was Signal 1.