S u b C o m p a c t B o a r d G E N E - 8 3 1 5Chapter 2 Quick Installation Guide 2 - 149 N/C / +5 Volt. 10 N/CCOM2/ RS-485Pin Signal Pin Signal1 TXD- 2 N/C3 TXD+ 4 N/C5 Ground 6 N/C7 N/C 8 N/C9 N/C / +5 Volt. 10 N/C2.16 Digital I/O Connector (CN5)Pin Signal Pin Signal1 Port 1 2 Port 23 Port 3 4 Port 45 Port 5 6 Port 67 Port 7 8 Port 89 +5 Volt. 10 GroundNote: Digital I/O Address is 801H.BIOSSettingConnectorDefinitionAddress IT8712 GPIOSettingPort 1 CN5 Pin 1 Bit 7 U40 Pin 20 (GPIO 27)Port 2 CN5 Pin 2 Bit 6 U40 Pin 21 (GPIO 26)Port 3 CN5 Pin 3 Bit 5 U40 Pin 22 (GPIO 25)Port 4 CN5 Pin 4 Bit 4 U40 Pin 23 (GPIO 24)Port 5 CN5 Pin 5 Bit 3 U40 Pin 24 (GPIO 23)Port 6 CN5 Pin 6 Bit 2 U40 Pin 25 (GPIO 22)Port 7 CN5 Pin 7 Bit 1 U40 Pin 26 (GPIO 21)