81
Chapter 5
SATA1: Serial ATA connectors
These connectors are used to support the Serial ATA 3Gb/s devices, simpler disk drivecabling and easier PC
assembly. It eliminates limitations of the current Parallel ATAinterface. But maintains register compatibility and
sofeware compatibility with PrallelATA.
F_USB2~3: Front Panel USB headers
The motherboard has four USB 2.0 headers supporting four USB 2.0 ports. Addition-ally, some computer
cases have USB ports at the front of the case. If you have thiskind of case, use auxiliary USB connector to
connect the front-mounted ports to themotherboard.
NOTE:
Please make sure that the USB cable has the same pin assignment asindicated above. A different pin
assignment may cause damage or systemhang-up.
SPDIFO: SPDIF out header
This is an optional header that provides an SPDIFO (Sony/Philips Digital Interface)output to digital multimedia
device through optical fiber or coaxial connector.
Pin
Signal Name
Pin
Signal Name
1
Ground
2
TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
Pin
Signal Name
Function
1
USBPWR
Front Panel USB Power
2
USBPWR
Front Panel USB Power
3
DATA0-
USB Port 0 Negative Signal
4
DATA1-
USB Port 1 Negative Signal
5
DATA0+
USB Port 0 Positive Signal
6
DATA1+
USB Port 1 Positive Signa
7
GND
Ground
8
GND
Ground
9
NC
Not connected
10
USB DET
USB DET
Pin
Signal Name
1
VCC
2
KEY
3
SPDIFOUT
4
GND
Summary of Contents for Aspire X3990
Page 1: ...Acer Aspire X3990 Service Guide PRINTED IN TAIWAN ...
Page 12: ...4 Chapter 1 Block Diagram ...
Page 65: ...57 Chapter 3 Install the I O Shielding 1 Install I O shielding into chassis ...
Page 68: ...Chapter 3 60 4 Connect the ATX 24Pin Power cable and ATX 4Pin Power cable to main board ...
Page 75: ...67 Chapter 3 Install the TV Tuner Card 1 Press down the TV Tuner card 2 Fix the two screws ...
Page 76: ...Chapter 3 68 Install the Side Panel 1 Install the side Panel then fix two Screws ...
Page 84: ...Chapter 5 76 M B Placement Jumper and Connector Information Chapter 5 ...