Raspberry Pi HD Monitor

The monitor comes with a USB-A to USB-C cable for powering the monitor from a Pi-5 USB-A port (RPi-4B or RPi-5B). The supplied cable is one meter (39 inches) in length.

Mode	Volts	Amps	Watts
Apple (USB--C PD) 20W - 100 % Power	5.07	1.03	5.2
Apple (USB-C-PD) 20W -   60 % Power*	5.12	0.804	4.1
Apple (USB-A) 12W  -   60 % Power	5.15	0.798	4.1
RPi-5B (USB-A)       -   60 % Power	5.03	0.80	4.0
Screen Blanking	5.12	0.003	0.015
Off	5.12	0.003	0.015

* Adjusted with the back monitor buttons - Brightness 60 %; Sound 50 %.

In trying to determine how much power the monitor consumes in the power save mode, I went down a deep rabbit hole. I measured the current with a "Ruigend" USB-A meter (sold by numerous brands on Amazon). After a full day of scratching my head, I finally determined with a Satechi USB-C meter (I had to connect USB-C to USB-A adapters on both ends) that for some reason the "Ruigend" meter was giving me a low current reading. It seems to work fine except for the combination of powering the monitor through a RPi-4 or RPi-5 type USB-A port.

Device	Amps
Logitech Wired Mouse	0.010-0.040
Old IBM Wired Mouse	0.050-0.090
Old Apple USB Keyboard	0.100

 

Specification	Volts	Amps	Watts
USB 1.x	5	0.5	2.5
USB 2.0	5	0.5	2.5
USB 3.x	5	0.9	4.5

 

Device	Power Supply	Amps
RPi-5	Compliant Power Delivery (PD)	1.6
RPi-5	Non-Compliant PD	0.6
RPi-4		1.2