If you get the USB device is busy with a previous request error when you attach a USB device on VirtualBox, see this post for resolution.

USB port not recognizing your device? Learn the common causes and step-by-step fixes to get your connection working again quickly.

The newly released Arduino Leonardo has a few very interesting features, most notably the ability to act as a USB keyboard and mouse thanks to the new ATmega 32U4 microcontroller. This feature isn&… ...

While the Arduino family of boards connect to your computer using a USB virtual serial port, the ATmega ones have an actual serial connection on-board.