Chip model is AT90USB1286, microcontroller software development and learning the best experimental board, has been installed Bootloader , you can directly download the application code through the common USB interface, helpful for beginners. of use: teensy.exe can be downloaded directly from the Internet, no need to install the driver, direct erase, , check. Do not need to buy another expensive burner. At the same time, you can use for IDE to install the Teensy development environment for use. Key Features: USB can be any type of device AVR processor, 16 MHz Single pushbutton programming Easy to use Teensy Loader application Compatible for Works with , Linux & Windows size, perfect for many projects Colour: green + black Material: metal + plastic Size: development board about 51x18mm Package Contents: 1 * Teensy 2.0 ++ USB AVR Development Board 1 * Line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.