This is a follow-up to this thread: https://arstechnica.com/civis/threa...-polarity-of-this-laptop-barrel-jack.1491071/tl;dr I have a laptop but no charger, and I'm ...

USB ports have quietly turned into the default power outlet for phones, laptops, headphones, and even monitors, but the ...

How many watts can a USB port actually output? The answer depends on your cable and protocol. Here is the ultimate guide to ...

Last time, we configured the FUSB302 to receive USB PD messages, and successfully received a “capability advertisement” message from a USB-C PSU. Now we crack the PD specification open, parse the ...

If you've bought a new USB-C cable or charger and seen "USB-PD" on the charger's or cable's box, you may have wondered what exactly these letters stood for. The answer is USB Power Delivery, a ...

With the growing number of devices that most people use today, be it smartphones, smartwatches, laptops, wireless earbuds, and other gadgets, charging them quickly and efficiently becomes important.

Short version: I’ve got two USB-C hubs that claim to deliver 100 watts of PD power, but they both seem to only deliver 65 watts. Is this the hub manufacturers lying or is this my laptop reducing its ...

The USB Type-C connector and power delivery (PD) specification has brought radical changes to the mobile device industry, and USB Type-C PD 3.0 could optimize battery charging for portable devices.

USB power has become ubiquitous — everything from phones to laptops all use it — so why not your lab bench? This is what [EEEngineer4Ever] set out to do with the BenchVolt PD USB adjustable bench ...

Sometimes, it's a limitation of the physical hardware or USB specification, while in other cases a manufacturer may implement ...