How much power can a USB port actually deliver?

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

USB bus-powered devices put an end to Wall Warts

“Wall Warts” (the colorful name for our beloved device Power Supplies) may be a thing of the past for some consumer electronics devices thanks to the ubiquitous and versatile Universal Serial Bus (USB ...

How Do You Tell What Type Of USB Ports You Have?

To identify the specific USB ports and connectors on your devices, you can simply look at their shape and color, or check ...
Hackaday

Ubiquitous Successful Bus: Hacking USB 2 Hubs

We’ve been recently looking into USB 2.0 – the ubiquitous point-to-point communications standard. USB 2 is completely different from USB 3, the blue-connector next-generation USB standard. For ...
Electronic Design

Make The Most Of Your USB Functionality

The Universal Serial Bus (USB) is a proven connectivity system. However, there are still design challenges in producing a USB hardware interface. Prime among these are face layout, power, and ...
Electronic Design

End USB Noise Without Stopping the Bus

As universal serial bus (USB) 1.1 becomes stable ground for developers, the introduction of USB 2.0 makes the ground uncertain again. The new specification calls for operation up to 40 times faster ...