This is an Arduino compatible R3 Mega2560 ATmega2560-16AU control board. Comes with USB cable.
Specifications:
Microcontroller: ATmega2560
Operating voltage: 5V
Input voltage (recommended): 7-12V
Input voltage (limits): 6-20V
Digital I / O pins: 54 (of which 14 provide PWM output)
Analog input pins: 16
DC current per I / O pin: 40 mA
DC current for 3.3V Pin: 50 mA
Flash Memory: 256 KB of which 4 KB used by bootloader
SRAM: 8 KB
EEPROM: 4 KB
Clock Speed: 16MHz
Includes:
1 x Control board
1 x USB cable