CN3

CN4

Legend

Orientate your Pi with the GPIO on the right and the HDMI port(s) on the left.

• GPIO (General Purpose IO)
• SPI (Serial Peripheral Interface)
• I²C (Inter-integrated Circuit)
• UART (Universal Asyncronous Receiver/Transmitter)
• PCM (Pulse Code Modulation)
• Ground
• 5v (Power)
• 3.3v (Power)