Features: 100% brand new and high quality
With 16Mhz crystal
Power supply jumper to connect external 5V.
he USB port is also available in single row pin strip to connect a USB cable (Host) to connect other Devices.
Color : Blue
Module Size : 3.4cm x 1.8cm/1.33''X0.7''
Pin Size : 3cm X 1.2cm / 1.18''X0.47''
Supported under Arduino IDE v1.0.5