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Extra USB Headers
Three additional USB1.1 headers
(USB2/3/4) are included on the
serverboard.
These may be con-
nected to provide front side access.
USB cables (not included) are needed
for the connections. See the table on
the right for pin defi nitions.
Serial Ports
The COM1 serial port is located
beside the USB ports. COM2 is a
header on the serverboard located
near the fl oppy drive connector (see
serverboard layout for location). See
the table on the right for pin defi ni-
tions.
Fan Headers
The H8DAR-T/H8DAR-E has five
headers (FAN1-FAN5). Fan speed is
controlled via Thermal Management
with a BIOS setting. See the table on
the right for pin defi nitions.
Power Fail and Alarm Reset
Header
Connect a cable from your power sup-
ply to the JP10 header to provide you
with warning of a power supply failure.
The warning signal is passed through
the PWR_LED pin to indicate a power
failure. See the table on the right for
pin defi nitions.
Extra Universal Serial Bus Headers
Pin Defi nitions (USB2/3/4)
USB2
Pin #
Defi nition
1
+5V
2
PO-
3
PO+
4
Ground
5
Key
Serial Port Pin Defi nitions
(COM1/COM2)
Pin #
Defi nition
1
CD
2
RD
3
TD
4
DTR
5
Ground
Note: Pin 10 is included on the header but not on
the port. NC indicates no connection.
Fan Header
Pin Defi nitions
(FAN1-5)
Pin#
Defi nition
1
Ground (Black)
2
+12V (Red)
3
Tachometer
Power Fail/Alarm Reset
Pin Defi nitions (JP10)
Pin#
Defi nition
1
P/S 1 Fail Signal
2
P/S 2 Fail Signal
3
P/S 3 Fail Signal
4
Reset (from MB)
Note: This feature is only available when using
redundant power supplies.
2-11
Chapter 2: Installation
USB3/4
Pin #
Defi nition
1
+5V
2
PO-
3
PO+
4
Ground
5
No connection
Pin #
Defi nition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
Header
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