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 ...

I just got a Lenovo V14 G3 laptop. It's quite nice, though not top-end. I hate soldered memory but this at least has one SO-DIMM slot, and more importantly, a power button that isn't embedded in the ...

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 ...

The Universal Serial Bus (USB) started out as a data interface, but it didn’t take long before progressing to powering devices. Initially, its maximum output was only 2.5 W; now, it can deliver up to ...