![background image](http://html.mh-extra.com/html/acer/veriton-m490/veriton-m490_service-manual_2838220070.webp)
Chapter 5
62
F_AUDIO: Front Panel Audio header for Azalia
This header allows the user to install auxiliary front-oriented microphone and lineout ports for easier access.
F_USB1~4: Front Panel USB headers
The motherboard has four USB ports installed on the rear edge I/O port array. Additionally, some computer
cases have USB ports at the front of the case. If you have this kind of case, use auxiliary USB connector to
connect the front-mounted ports to the motherboard.
COM2: Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port to your system.
Pin
Signal Name
Pin
Signal Name
1 PORT
1L
2 AUD_GND
3 PORT
1R
4 PRESENCE#
5 PORT
2R
6 SENSE1_RETURN
7 SENSE_SEND
8 KEY
9 PORT
2L
10
SENSE2_RETURN
Pin
Signal Name
Function
1
USBPWR me
Front Panel USB Power
2
USBPWR
Front Panel USB Power
3
USB_FP_P0-
USB Port 0 Negative Signal
4
USB_FP_P1-
USB Port 1 Negative Signal
5
US
USB Port 0 Positive Signal
6
US
USB Port 1 Positive Signal
7
GND Ground
8 GND
Ground
9
Key No
pin
10 USB_FP_OC0
NC
Pin
Signal Name
Function
1
DCD me
Data Carrier Detect
2
SIN Serial
Input
3
SOUT
UART B Serial Output
4
DTR
UART B Data Terminal Ready
5 GND
Ground
6 DSR
Data
Set
Ready
7
RTS
RART B Request to Send
8 CTS
Clear
to
Send
Содержание Veriton M490
Страница 1: ...Acer Veriton M498G M490G M490 Service Guide PRINTED IN TAIWAN ...
Страница 13: ...Chapter 1 5 Block Diagram ...
Страница 50: ...42 Chapter 3 4 Removing the two screws then take out the intrusion alarm assembly ...
Страница 57: ...Chapter 3 49 4 Removing the screws from the chassis 5 Lift the front I O and USB assembly away from chassiss ...
Страница 66: ...Chapter 5 58 M B Placement Jumper and Connector Information Chapter 5 ...