MAX BR1 Mini – IGN pin wiring for DC power (non-vehicle installation)

Hi,

We have two Peplink MAX BR1 Mini units deployed at remote sites. The factory power adapter is a wall-wart style plug, which doesn’t fit well on the power strip in our server rack.

I’d like to power the unit from the rack PDU, which provides 240VAC via IEC320-C14 outlets. To do this, I purchased a power supply with an IEC320-C15 input (120–240VAC) and a 12VDC, 1.5A output.

I’m planning to build a custom cable using the connector shown in your documentation (referencing the ignition sensing pinout). The Peplink has four pins: VCC, GND, IGN, and GPIO. The factory cable uses VCC, GND, and IGN, but not GPIO.

My question is about the IGN pin:

Since my power supply only provides +12VDC and GND, is it acceptable to tie the IGN pin to +12V (same as VCC) so the unit powers on automatically?

My assumption is that the IGN pin functions similarly to an automotive ignition sense input and requires ~12V to enable the device. Can you confirm if this is correct?

The manual indicates that IGN is optional, but since it is present in the factory cable, I want to confirm the correct implementation.

Thanks for your help.