2-30
Chapter 2: Hardware information
•
System Warning Speaker Lead (4-pin SPKR)
This 4-pin connector connects to the case-mounted speaker and
allows you to hear system beeps and warnings.
•
Hard Disk Activity Lead (2-pin IDE_LED)
This 2-pin connector is for the HDD LED cable. The read or write
activities of the device connected to the any of IDE connectors cause the
IDE LED to light up.
•
ATX Power Switch / Soft-Off Switch Lead (2-pin PWRBTN)
This connector connects a switch that controls the system power.
Pressing the power switch turns the system between ON and SLEEP,
or ON and SOFT OFF, depending on the BIOS or OS settings.
Pressing the power switch while in the ON mode for more than 4
seconds turns the system OFF.
•
Reset Switch Lead (2-pin RESET)
This 2-pin connector connects to the case-mounted reset switch for
rebooting the system without turning off the system power.
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