Powering devices with standard USB-C power supplies: Polycom Poly Studio Premium USB Video Bar, Dell Optiplex 5090 Micro

This Polycom Poly Studio video bar has a 6.3mm x 3.0mm DC port that pulls 12V/5A at peak. Since I got one of these used, it came without a power supply. I used this angled adapter connected to a 12V trigger powered by a standard 65w USB-C PD power supply.

To power a Dell Optiplex 5090 micro, I’ve also used this 18-20V USB-C trigger since the computer uses a 4.5mm x 3.0mm barrel.

Since I’ve started powering more devices using generic USB-C power supplies recently, I’ve also noticed that some of these power supplies don’t actually have 5V support above 3A.

For example, the Lenovo/ThinkPad 65w travel adapter (ADLX65YSDC2A) only offers “20V/3.25A, 15V/3A, 9V/3A, 5V/3A”, and my Lenovo/ThinkPad 135w adapter (ADL135YSDC3A SA10R16963) offers “20V/6.75A, 19.95/5A, 15V/3A, 9V/3A, 5V/3A” and the Lenovo/ThinkPad 65w adapter that most ThinkPads ship with (ADLX65YLC2A FRU 01FR025) only offers “20V/3.25A, 15V/3A, 9V/2A, 5V/2A”.

Fortunately, the reasonably priced HP 65W USB-C LC Power Adapter - 1P3K6UT#ABA offers 10-240V input, and helpfully outputs “20V/3.25A, 15v/4.33A, 12V/5A, 15V/3A, 9V/3A, 5V/3A”. This HP adapter is definitely the power supply I’ll be deploying, moving forward, given the much wider range of outputs.