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2-10
Chapter 2
Board Installation
12 -
Reserved Jumpers
The following jumpers are preset for optimum performance. Their settings are
NOT to be changed. Tyan is not responsible for any motherboard malfunc-
tions due to the tampering of these jumper settings. Location of these jumpers
can be found on page 2-4.
JP2 / J14 / J15 / JP21 / JP22 / JP23 - RESERVED!
Soft Power Connector
The Soft Power Connector is located on pins 5 & 6 or pins 6 & 8 of jumper
block JP20. The Thunder X uses the PIIX4e chip for power management,
including turning on and off the system. If the Power Button Function option
in the BIOS Power Management Menu is set to On/Off (which is the default),
pressing the power button once after the BIOS has booted up will turn the
system on and off. If the Power Button Function option is set to Suspend,
pressing the power button once will wake the system or send it to Suspend
mode. In this case, you cannot turn the system off unless you shut down
through the Windows operating system or you hold the power button down
for four seconds.
Speaker Connector Installation
The Thunder X provides a 4-pin header to connect the external speaker. The
speaker should be connected to pins 1-4 of jumper JP35. As default, pins 3-4
of jumper JP35 are connected to the internal buzzer.
Hardware Reset Switch Connector Installation
The Reset switch on your case’s display panel provides you with the Hard-
ware Reset function, which is the same as power on/off. The system will do a
cold start after the Reset button is pushed. The Reset switch is a 2-pin
connector and should be installed on pins 5 & 7 OR pins 7 & 8 of jumper JP20.
External SMI
The EXTSMI (External System Management Interface) connector, jumper JP17,
is used by some plug-in cards. Certain applications associated with these
plug-in cards use the interface for hardware control and queries.
!!!!!
important!