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L7VTA3 V3.1a
JP1 – Enables you to clear the BIOS. Follow these instructions:
2.
Turn the system off.
3.
Short pins 2 and 3 on jumper 1.
4.
Return the jumper to the normal setting.
5.
Turn the system on. The BIOS is returned to the default settings.
JP3 – Enables you to prevent the BIOS from being updated (flashed). Set the
jumper to disabled if you are going to update your BIOS. After updating the
BIOS, return it to the default setting (enabled). For instructions on updating
the BIOS refer to Chapter 3.
JP4 – Use this jumper to select the CPU frequency.
J1 – This connector allows the user to detect unauthorized intrusion to the
case. It will alert the user with a warning message when the case is turned on.
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After you have installed the mainboard into a case, you can begin connecting
the mainboard components. Refer to the following:
1.
Connect the case
power supply
connector to ATX1.
2.
Connect the CPU
cooling fan cable to
CPUFAN1.
3.
Connect the case
cooling fan connector
to CASFAN1.
4.
Connect the case
speaker cable to
SPEAKER1.
5.
Connect the case
LED cable to
SJ1/LSJ1 (OEM
customer only).
6.
If your case has a
case open alarm
cable, connect it to
J1.
SPEAKER1: Speaker connector
Connect the internal speaker connector to this header.
Pin
Signal Name
1
External speaker
2
NC
3
NC
4
VCC
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