Based around the 16MHz ATmega2560, it is a functionally identical clone of the open source Arduino Mega. An ATmega16U2 is used as the USB-to-serial interface as in the genuine Mega, rather than the cheaper alternatives used in lots of clones. So perhaps a slightly better build quality than the average clone.

Like the originals it also contains a trace that can be cut to disable the auto-reset each time it is connected via USB. The pads on either side of the trace can be soldered together to re-enable it. It’s labeled “RESET-EN”. Many other clones do not have this jumper.

It can use most Uno shields, but some may require additional wiring or configuration adjustments due to differences in pin layouts and communication protocols. The Mega has fifty four digital I/O pins and sixteen analog inputs compared to the Uno's fourteen digital I/O pins and 6 analog inputs. It also has much larger memory - 256kB flash memory for the Mega compared to 32kB for the Uno. So in short, a mega version of the Uno.

• Microcontroller: ATmega2560
• Clock Speed: 16 MHz
• Operating Voltage: 5V
• Input Voltage: 7-12V
• 3.3V Power Out: up to 50 mA
• 5V Power Out: up to 800 mA
• Digital I/O Pins: 54 (15 support PWM output)
• Analog Input Pins: 16 (with 10-bit resolution)
• Flash Memory: 256kB (8kB used by bootloader)
• SRAM: 8 kB
• EEPROM: 4 kB
• Serial I/O: 4 UARTs, one SPI and one I2C interface
• Reset-En jumper/solder pad

¹⁾

²⁾

• Old (now defunct) Funduino.cn website
• Current Funduino mega webpage
• Mega2560 manual
• Mega2560 pinout details (official)
• Mega2560 schematic

If any referenced page no longer exists, try looking for its URL on http://archive.org.