Front Usb Connector; Chassis Intrusion Connector; Front Panel Auido Connector - Acer Aspire G7750 Series Service Manual

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
1
2
3
4
5

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.

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
1
2
3
4
5
6
7
8
9
10
84
Signal
VCC
VCC
USB0-
USB1-
USB0+
Signal
MIC_L
GND
MIC_R
NC
LINEout_R
MIC_JD
Front_JD
NC
LINEout_L
LINEout_JD
Pin Signal
6 USB1+
7 GND
8 GND
9 Key (no pin)
10 USBOC
GND 2
1
CINTRU
JCI1
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
Chapter 5