User`s manual

SBC86831 Series All-In-One Mini ITX Board User’s Manual

Jumpers and Connectors

2.3 Jumper Settings

Proper jumer settings configure the SBC86831 to meet your

application purpose. We are herewith listing a summary table of all

jumpers and default settings for onboard devices, respectively.

Here is a list of jumper settings：

Jumper Default Setting Jumper Setting

JP1 COM1 Mode Select: RS-232 Short 1-2

JP2 COM1 Mode Select: RS-232 Short 3-5,4-6

JP3 COM1 Mode Select: RS-232 Short 3-5,4-6

CN2 Pin 1: DCD Short 7-9

JP4

COM2 Mode

Select

CN2 Pin 8: RI Short 8-10

CN3 Pin 1: DCD Short 7-9

JP5

COM3 Mode

Select

CN3 Pin 8: RI Short 8-10

CN4 Pin 1: DCD Short 7-9

JP6

COM4 Mode

Select

CN4 Pin 8: RI Short 8-10

CN7 Pin 1: DCD Short 7-9

JP7

COM1 Mode

Select

CN7 Pin 9: RI Short 8-10

JP8 CPU Frequency Select: Auto Short 1-2

JP9 CPU Frequency Select: Auto Short 1-2

JP10 CPU Frequency Select: Auto Short 1-2

JP11 LVDS Voltage select : 3.3V Short 1-2

JP12 SDVO CARD Select : Enable Short 2-3

JP14 Clear CMOS Setting : Normal Short 1-2

JP15 TPM Function (Optional) Short 1-2

JP16 Compact Flash Select : Slave (Optional) Short 1-2

JP17

Compact Flash Power Select : 3.3V

(Optional)

Short 1-2

JP18 USB2 Voltage select : 5V_SBY Short 1-2

JP19 USB1 Voltage select : 5V_SBY Short 1-2