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Power Supply SMBus connector (5-pin PSUSMB1).
This connector allows you to connect SMBus (System Management
Bus) devices to the power supply unit. Devices communicate with an
SMBus host and/or other SMBus devices using the SMBus interface.
9.
System panel connector (20-pin PANEL1)
This connector supports several chassis-mounted functions.
KFN4-D16 (Series) System Panel Connector
The system panel connector is color-coded for easy connection. Refer to
the connector description below for details.
•
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.
2-32
KFN4-D16/SAS
PANEL1
Chapter 2: Hardware information
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