Chapter 2 – Hardware Information 9Rockchip RK3288 Platform RICO-32882.3.3 JP3: RS232 output power (Optional)Pin Definition1-2 +12V2-3 +5V2.3.4 JP4: Update imageMode JP4Normal mode OpenUpdate image Short2.3.5 JP5: Integrated3 (220-97-05GB01)Pin Definition Pin Definition1 +3.3V 6 I2C1_CLK2 Battery Detect 7 GND3 UART4_TX 8 I2C1_DATA4 Disable charger 9 GPIO5 UART4_RX 10 GPIO