Jtron 03100546 USB Development Board - Black (Works with Official Arduino Boards)
Introduction: 1. Supports Arduino IDE 1.0 + (OSX / Win / Linux) 2. Through USB or 5V or 7~35V (auto-match) extra power supply 3. There is a 500mA 5V regulator on the motherboard 4. USB embedding (serial debugging) 5. 6 I/O Pins (2 to support USB) 6. 8K Flash Memory (about 6k after bootloader) 7. I2C and SPI (vis USI) 8. PWM on 3 pins (more possible with Software PWM) 9. ADC on 4 pins 10. Power LED indicator and Test / Status LED (in Pin0)