2U12L6SW
28
29
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Pin Definitions
#1 Power Connector
(PWR1)
+5V
+12V
GND1
GND2
The 4-pin connectors
provide power to the
backplane.
#2, 3 SAS Connectors
(SAS1, SAS2)
These two SAS connectors
support SAS/SATA data
cables for internal stor-
age devices. The current
SAS2/SATA3 interface
allows up to 6.0 Gb/s data
transfer rate.
#4 Intelligent Platform
Management Bus Header
(SMB_1)
IPMB_SMBDATA
GND
I2C_1_PRESENT_N
IPMB_SMBCLK
+3VSB
1
This 4-pin connector
provides a communication
interface between the
backplane and the
motherboard. It allows
basic monitoring of
voltages, fans, and
temperature.
#5 Serial General Purpose
Input/Output Header
(SGPIO_1)
SDATAIN0
SDATAOUT0
SLOAD
SCLOCK
GND
GND
1
This header supports
Serial Link interface
for onboard SATA
connections.
#2 Debug Connector
(DEBUG1)
1
GND
RST#
Debug
The Debug Connector is used
for the firmware upgrade and
factory reset.
SAS_2
SAS_1
