Makerduino UNO is compatible and an improvement for Arduino UNO R3. It uses the best quality of material but sells in a much lower price. The Makerduino you received is fully tested with preloaded firmware. It comes with an USB cable, just plug and play.
A product for Arduino that works with official Arduino boards.
Brand: Maker Studio
Model: Makerduino Uno
Color: Deep Blue
English Manual / Spec: No
Download Link: http://www.fileswap.com/dl/H0qYVpKTI/Makerduino_UNO_v3.0_r1.pdf.html
Other Features: 1. Use FT232 instead of ATmega16u2 making the interface more stable 2. Use Bigger package of 5V and 3.3V voltage regulator improving the load-carrying capacity 3. Bring out double pins for Arduino.
Dimensions & Weight
Dimensions: 2.95 in x 2.13 in x 0.51 in (7.5 cm x 5.4 cm x 1.3 cm)
Weight: 0.85 oz (24 g)
1 x Makerduino UNO
1 x USB cable (52cm)