The polarity selector enables you to choose positive or negative polarity to match the requirement of the device you want to connect to the adapter.

The polarity (positive or negative) will typically be identified in the device’s user manual and/or on the device itself. If the device does not have a polarity specification, contact the manufacturer of the device and ask for the information.

Yes. An incorrect polarity might damage the device. Check to make sure that the polarity selector on the Universal Power Adapter is set to the proper polarity for the device you want to connect.

The voltage selector supports multiple voltages. The range varies according to the model. CPUAC600: 3V, 4.5V, 6V, 7.5V, 9V, and 12V. CPUAC1U1300: 3V, 4.5V, 5V, 6V, 7.5V, 9V, and 12V. CPUDC1U2000: 3V, 4.5V, 6V, 9V, and 12V.

The voltage required will typically be identified in the device’s user manual and/or on the device itself. If you cannot determine the proper voltage, contact the manufacturer of the device and ask for the information.

Yes. An incorrect voltage might damage the device. Check to make sure that the voltage selector on the Universal Power Adapter is set to the proper voltage for the device you want to connect.