Here is the hardware information for Banana Pi R1 Board
Front Board

Back Board

GPIO PIN

Specification
CPU | A20 ARM Cortex-A7™ Dual-core |
GPU | ARM Mali-400 MP2 with Open GL ES 2.0/1.1 |
Memory | 1 GB DDR3 SDRAM |
Storage Support | SD Card(up to 64GB)/SATA(up to 2TB) |
Onboard Network | 4x Gigabit LAN 1x Gigabit WAN |
Video In | CSI input for video cameras |
Video Out | HDMI,CVBS,LVDS/RGB |
Audio Out | 3.5 mm Jack and HDMI |
Audio In | On board microphone |
Power Source | Micro USB, optional 5V DC port (center positive 1,6 x 4,4mm) |
USB Ports | 2x USB 2.0 |
Buttons | Reset: next to Micro USbPower: next to resetBoot(optional): behind HDMI connector |
GPIO | GPIO, UART, I2C Bus, SPI Bus with two chip select,CAN bus, ADC, PWM, +3.3v, +5v, ground |
LED | Power key and RJ45 |
OS | Android, Raspbian, Ubuntu, OpenSUSE, Debian, Bananian |
Dimensions | 148mm x 100mm |
Weight | 83g |