1 Topic by Electrumpet (edited by Electrumpet 2020-02-18 20:33:04)

  • Registered: 2012-05-05
  • Posts: 5

Topic: USB-c to DC power for powering fireface?

Dear all,

Does anybody have experience powering the fireface directly through usb-c instead of using the adapter that RME provides? There are usb-c to DC adapter cables but I am wondering if the up to 20V output of the USB-C is just too much for the DC input of the fireface or if it can handle it. Officially the power should be between 9 - 18 V but I haven't seen the absolute maximum specs in a data sheet.

Best, Hans.

2 Reply by MC

  • MC
  • MC
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  • Registered: 2007-04-06
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Re: USB-c to DC power for powering fireface?

USB-C provides the usual 5 Volts without negotiation through the PD (power delivery) standard. Such a cable can not work.

Regards
Matthias Carstens
RME

MC's Website

3 Reply by Electrumpet (edited by Electrumpet 2020-02-19 19:01:53)

  • Registered: 2012-05-05
  • Posts: 5

Re: USB-c to DC power for powering fireface?

As far as I understand these devices have PD emulators that do the negotiation that you describe:

https://www.ebay.com/itm/USB-3-1-Type-C … 3677978709

So it would be a cable with an emulator or a pd to dc cable with an emulator build into it.

Best, Hans.

4 Reply by MC

  • MC
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Re: USB-c to DC power for powering fireface?

The power supply specs are in the manual. 18 to 20 Volt will destroy many units, and I have no clue which one you have.

Regards
Matthias Carstens
RME

MC's Website