ATEN Technology US221A / US421A Manual Operation – Pushbutton, US221A, US421A

Manual Operation – Pushbutton

Note: Manual operation and the software-based configuration utility operate independently; commands from one will not override the other.

US221A

To toggle the USB peripheral focus between the two computers, press the port selection pushbutton (located on the top of the unit). The selected port LED flashes and the unit beeps. When the flashing stops and the LED becomes steady (in about four seconds), that port has the peripheral focus.

US421A

To switch the peripheral focus to another port, press the pushbutton that corresponds to that port. The selected port LED flashes and the unit beeps. When the flashing stops and the LED becomes steady (in about four seconds), that port has the peripheral focus.

Lock/Unlock Peripheral Focus

To lock the peripheral focus on a certain computer, press and hold the pushbutton that corresponds to that port for two seconds, or until the orange LED lights up.

To unlock the peripheral focus, press and hold the pushbutton that corresponds to that port for one second, or until the orange LED turns off.

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