User's Manual

4.4 Jumper installation

1. JBFA1: CPU Speed Select

Since the CPU is pre-soldering by manufacturer, So, there

is no need to install this jumper. The manufacturer will

pre-install this jumper correctly. Please do not change the

setting of this jumper to prevent any damage of the CPU.

2. JCLK1: PCI Clock

2-4 : 33MHz

4-6 : 30MHz

3. JBAT2 : CMOS

1-2 : Normal, CMOS data keep. (Default)

2-3 : Clear CMOS

When you want to clear the CMOS, please put

jumper at pin 2-3 and then

move back to pin 1-2 for normal operation.

4. LPT1 : Printer port connector

5. COM1: COM1 port connector

6. COM2: COM2 port connector

7. VGA1: VGA port connector

8. CN2: 2 x USB port and LAN port connector

9. CN1: PS/2 keyboard port and PS/2 mouse port connector

10. COM3: COM3 port connector for optional COM3

11. COM4: COM4 port connector for optional COM4

12. J4: Audio sound connector for optional sound

13. U33: System BIOS socket for 2MB EEPROM

14. U17: Disk on chip socket for M-System disk on chip

memory module.

15. J2: PCI/ISA mixed Riser card connector

16. U3: NS CS5530 (CS5530A) south bridge chip

17. U1: NS GX1-233/300 CPU

18. HDD1: 40 pins connector for hard disk cable connector

19. FDD2: 34 Pins connector for floppy disk cable connector

20. DIM1: 168 pins SDRAM memory module socket