ACTi I91 - Manual (Page 12)

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Hardware Manual
12
2. Take note that the power adapter cable has two (2) different wires:
3. Connect the wire with the white stripe to the 12V pin and the other to the GND pin.
4. Tighten the screws of the 12V pin and the GND pins to secure the wire connection.
5. Attach one of the bundled adapter plugs suitable in your location.
White stripe: Connects to 12V Pin
Connects to GND Pin