Asus KFN5-Q/SAS - Manual (Page 59)

2-38 Chapter 2: Hardware information
• System power LED (Green 3-pin POWERLED)
This 3-pin connector is for the system power LED. Connect the
chassis power LED cable to this connector. The system power LED
lights up when you turn on the system power, and blinks when the
system is in sleep mode.
• Hard disk drive activity (Red 2-pin HDDLED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD
Activity LED cable to this connector. The IDE LED lights up or flashes
when data is read from or written to the HDD.
If an optional SATA add-in card is installed, the read or write activities
of any device connected to the SATA add-in card causes this LED to
light up.
• System warning speaker (Orange 4-pin SPKROUT)
This 4-pin connector is for the chassis-mounted system warning
speaker. The speaker allows you to hear system beeps and warnings.
• Power/Soft-off button (Yellow 2-pin POWERBTN)
This connector is for the system power button. Pressing the power
button turns the system ON or puts the system in SLEEP or SOFT-OFF
mode depending on the BIOS settings. Pressing the power switch for
more than four seconds while the system is ON turns the system OFF.
• Reset button (Blue 2-pin RESETBTN)
This 2-pin connector is for the chassis-mounted reset button for
system reboot without turning off the system power.
10. SSI power connectors (24-pin ATXPWR1, 2 x 8-pin
ATX12V1, ATX12V2)
SSI power connectors (24-pin ATXPWR1, 2-8 pin ATX12V1,
ATX12V2). These connectors are for SSI power supply plugs. The
power supply plugs are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.
Use of an SSI 12 V Specification 2.0-compliant power supply unit
(PSU) that provides a minimum power of 800 W is recommended for a
fully-configured system. Do not forget to connect the two 8-pin ATX
+12 V power plug; otherwise, the system will not boot up.
Use of a PSU with a higher power output is recommended when
configuring a system with more power consuming devices. The system
may become unstable or may not boot up if the power is inadequate.
You must install a PSU with a higher power rating if you intend to
install additional devices.