Description: TheTeensyUSB Development Board is a complete USB-based microcontoller development system. Only a standard Mini-B USB cable (sold separately) is needed to connect to a PC or Macintosh. This version has solder pads for all I/O signals. The Teensy is also available with the header pins to plug directly into a solderless breadboard. All Teensy boards are shipped assembled and fully tested. Key Features: -USB can be any type of device -AVR processor, 16 MHz -Single pushbutton programming -Easy to use Teensy Loader application -Free software development tools -Works with Mac OS X, Linux & Windows -Tiny size, perfect for many projects -Available with pins for solderless breadboard -Very low cost & low cost shipping options Package included: 1 x Teensy USB development board 1 x line