Arduino UNO R4 WiFi power

Official Hardware UNO Family UNO R4 WiFi
1

I have an older computer that I use to power my Arduino UNO R3 from USB-Type A connectors in my laptop. However, the Arduino UNO R4 WiFi seems to require a 6-24 input voltage (VIN). Have some doubts about powering the UNO R4 WiFi board:

  1. Is it possible to use a USB-Type A to USB-Type C cable to properly power the Arduino UNO R4 WiFi from a laptop, even though it may not deliver the minimum 6V??
  2. If (1) above is indeed possible, what are the potential drawbacks of doing so, i.e., under powering the UNO R4 WiFi??
  3. If (1) is not possible, what would you recommend as a solution to power the Arduino UNO R4 WiFi from a laptop??
  4. The Arduino UNO R3 requires input voltage (nominal) 7-12V. If a USB-Type A delivers 5 Volts only, why does the UNO R3 work just fine when connected to USB-Type A??
    Hope I am making sense with my questions...
    Thank you. AA
2

Just regular usb-c cable should be fine.

3

That only applies when powering the board through the barrel jack or the VIN pin.

Yes, it will work fine.

None, except for a project where you don't have a computer handy to serve as a power supply.

4

It is the same situation. The "7-12 V" spec is only applicable when you power the board through the barrel jack or the VIN pin. These are connected to a voltage regulator that reduces the voltage down to the 5 V required by the electronics on the board.

Alternatively, you can also provide a reasonably clean 5 V supply (as is provided by the high quality power supply of a computer's USB sockets) directly to the board via the USB socket or the "5V" pin.

5

Very helpful. Thank you all for the feedback. AA

6

You are welcome. I'm glad if I was able to be of assistance.

Regards, Per