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1.4.2 Jumper Settings and I/O Connector
The onboard jumper settings and I/O connector of MB-X77 are custom-tailored to fit the
FW-7890 functionality. Changing the jumper settings may result in system malfunction or
unforeseen damages.
Jumper Settings and I/O Connector Summary for MB-X77
JUMPER
PLRS1
PKMB1
CMOS1
IDEB1
FAN 1 -3
FAN 4- 6
CF1
COMB1
LPTA1
PSC1
PCIB1
PCIXA1
PS4S1 - 2
PS8P1
SATAB1
VR1
PME1
LUSBCOM1 BOX_HEADER_2X20_2.00_DIP
PCIEA1 -3
USBF1
PSWB1
REDP1
1.4.3 Connector Pin Assignments
Power LED,HD LED,Reset,Speaker Connector(11 Pin 2.54mm)
PS/2 Keyboard & Mouse Connector (2x4 Header 2.54 mm)
Clear CMOS Data
IDE Interface Connector (40 Pin 2.54mm Pitch Header)
3 Pin FAN Connector
3 Pin FAN Connector
Compact Flash Connector
Serial Port #2 Connector (Header)
Parallel Connector (26 Pin 2.00mm Pitch Header)
24 Pin ATX Power Connector
124 Pin Mini PCI Socket
184 Pin 3V PCIX Socket
4 Pin Power Connector
8 Pin Power Connector
180 SATA Connector
Control Sound
One PME1 Connector supports Wake-on-LAN
PCI EXPRESS CONNECTOR
USB Port#1 & #2 Connector 2x5 Pin 2.54mm
ATX Power As AT Power Use Power Button
2 Pin header for Redundant Power detect signal
FUNCTION
5
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