实测戴尔OptiPlex 790主板34针前置面板接口针脚接口定义

实测戴尔OptiPlex 790主板34针前置面板针脚接口定义

34针插座针脚定义如下： 针脚----- 功能 1 --> MIC In 3 --> MIC In 5 --> Audio GND? 7--> GND 9 --> LED3 11 --> LED1 13 --> NO 15 -->HDD LED 17 -->USB 4 Power 19 --> GND 21 -->USB 4 Data + 23 -->USB 3 Data+ 25 --> GND 27-->USB 2 Data + 29 -->USB 1 Data - 31 --> GND 33 --> USB 1 Power 针脚----- 功能 2 --> MIC In 4 --> Audio out R 6 --> Audio out L 8 --> GND 10 --> GND Power 12 --> LED4 14 --> LED2 16 --> GND 18 -->USB 3 Power 20-->USB 4 Data - 22 --> GND 24 -->USB 3 Data - 26-->USB 2 Data - 28 -->GND

30 -->USB 1 Data + 32 -->GND 34 --> USB 2 Power