Description: Useful design: This development board supports bootloader, so you can download programs via USB, making it more convenient. Easy to power: This driver control board can be powered by USB or AC to DC adapter or battery, meeting your different needs. Easy to use: The installation of this module is convenient and fast, so you can quickly install it without using any special tools. Fine workmanship: This development board is well crafted and has a stable performance and can work smoothly. Good replacement: This driver control board features nice performance and is a good one to replace the old or damaged one. Specification: Material: ABS. Color: Show as picture. Size: Approx. 101.2x53.3mm/3.98x2.10 inch. Working voltage: 5V. Input voltage: 6-20V(7-12V recommended). I/O pin: 54. Analog pin: 16. I/O current: 40mA. 3.3V pin current: 50mAh. Memory: 256KB. for SRAM: 8KB. EEPROM: 4KB. Clock speed: 16Mhz. Compatibility: Replacement for Arduino for MEGA2560 R3. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Control Board(with 1 Piece USB Cable).