Acer Aspire G7750 Service Guide - Page 92

Front USB Connector The front USB connectors (JUSB1, JUSB2, and JUSB3), compliant with Intel(R) I/O Connectivity Design Guide, is ideal for connecting high-speed USB interface peripherals such as USB HDD, digital cameras, MP3 play connects to high-speed USB interface peripherals. Pin Signal 1 VCC 2 VCC 3 USB0- 4 USB1- 5 USB0+ Pin Signal 6 USB1+ 7 GND 8 GND 9 Key (no pin) 10 USBOC Chassis Intrusion Connector The chassis intrusion connector (JCI1) connects to the chassis intrusion switch cable. If the chassis is opened, the chassis intrusion mechanism will be activated. The system will record this status and show a warning message on the screen. To clear the warning, you must enter the CMOS setup utility and clear the record. GND 2 CINTRU 1 JCI1 Front Panel Auido Connector This connector allows you to connect the front panel audio and is compliant with Intel(R) I/O Connectivity Design Guide. HD Auido Pin Definition Pin Signal 1 MIC_L 2 GND 3 MIC_R 4 NC 5 LINEout_R 6 MIC_JD 7 Front_JD 8 NC 9 LINEout_L 10 LINEout_JD Description Microphone- Left channel Ground Microphone- Right channel No control Analog Port-Right channel Jack detection return from front panel microphone JACK1 Jack detection sense lin from the High Definition Audio CODEC jack detection resistor network No control Analog Port-Left channel Jack detection return from frontpanel JACK2 84 Chapter 5