
SYM76941VGGA Quick Installation Guide
SYM76941VGGA 简易说明书
1、System Board Layout

SYM76941VGGA Quick Installation Guide
2、Connectors:
Label Connectors
JATXPWR1 DC12V Input
IDE1 IDE device Connector
FDD1 Floppy disk Connector
TPM1 Trusted Platform Module Header
USB1~USB2 USB 2.0 Headers
SATA1~SATA4 Serial ATA Header
JCFAN1 CPU Fan Header
JDIO1 Digital I/O Connector
JSFAN1 System Fan Header
JPRNT1 Printer port Connector
ATXPWR1 Standard ATX power Input
JKBMS1 Keyboard/Mouse Connector
JPANEL1 Front Panel Connector
PEX1_1 PCI-E 1x slot
PEX16_1 PCI-E 16x slot
PCI1~PCI5 Standard PCI Slot
JCOM3~JCOM6 COM port Header
3、Jumper List
Jumper Function
JP1~JP6 COM1~COM6 Voltage Switch Headers
JSEL1~JSEL2 RS232/422/485 Switch Headers for COM1
JAT1~JAT2 AT/ATX Power Switch Header
JCMOS1 Clear CMOS Header

SYM76941VGGA Quick Installation Guide
4、Front Panel Connector setting :
Pin
1
Key N/A
2
Power LED+
3
HD LED+
4
Power LED+
5
HD LED-
HDD LED
6
Power LED-
Power
LED
7
Reset GND
8
Power
9
Reset
Reset
Button
10
Power GND
Power
Button
JPANEL1
5、Jumper Setting (JCMOS/JAT1):

SYM76941VGGA Quick Installation Guide
6、COM1 RS232/422/485 setting:
Note: JSEL1/JSEL2 determine that COM1 belongs to RS232/422/485
Checklist:
Ø SYM76941VGGA Mainboard*1pcs
Ø Utility CD for SYM76941VGGA*1pcs
Ø Installation Guide*1pcs
Ø SATA Cable *2pcs;
Ø COM cable and Print cable*6pcs
Pin
RS232 RS422 RS485
1
Carrier detect TX-
TX -
2 Received data TX+ TX+
3 Transmitted RX+ NC
4 Data terminal RX- NC
5 GND GND GND
6 Data set ready NC NC
7 Request to send NC NC
8 Clear to send NC NC
9 Ring NC NC
10 NC NC NC
JSEL2
1~2 RS232
3~4 RS422
5~6 RS485
JSEL1
RS232 RS422 RS485
1~3 3~5 3~5
2~4 4~6 4~6
7~9 9~11 9~11
8~10 10~12 10~12