SUPER MICRO Computer 1.2b user manual System Management Bus, Power SMB I2C Connector

Chapter 2: Installation

System Management Bus

A System Management Bus header is located at SUBUS1 on the mother- board. Connect the appropriate cable here to use the SMB connection on your system.

Power SMB (I2C) Connector

Power System Management Bus (I2C) Connector (JPI2C) monitors power supply, fan and system temperatures. See the table on the right for pin definitions.

SMB Header

Pin Definitions

Pin# Definition

1Data

2Ground

3Clock

4No Connection

PWR SMB

Pin Definitions

Pin# Definition

1Clock

2Data

3PWR Fail

4Ground

5+3.3V

		P2 DIMM3A	JPI2C1	BJPW1
FAN6	FAN5		PWR I2C		JPW2	JPW3
		P2 DIMM3B	FAN7 CPU FAN1

P2 DIMM3C

A.SMB

B.PWR SMB

	KB/MS
COM1 (Bottom)	VGA (Top)
USB0/1	IPMI LAN	PHY
USB 2/3/4/5		Chip
		LAN2(Top)
(Bottom)
LAN1
AUDIO
Header
	7.1HD AUDIO	CPU2 FAN
	CD1
Audio
CTRL

P2 DIMM2A

P2 DIMM2B

P2 DIMM2C

P2 DIMM1A

P2 DIMM1B

P2 DIMM1C

ALWAYS POPULATE DIMM1 FIRST

CPU2

Slot7 PCI-E 2.0 x8

Slot6 PCI-E 2.0 x16

CPU1

P1 DIMM1C

P1 DIMM1B

P1 DIMM1A

P1 DIMM2C

P1 DIMM2B

P1 DIMM2A

P1 DIMM3C

P1 DIMM3B

P1 DIMM3A

ALWAYS POPULATE DIMM1 FIRST

X8DAH+ Rev. 2.01

JD1

FAN2 JF1 FPCTL FAN1

SP1

Firmware
BMC		Slot5 PCI-E 2.0 x4 (in x8 Slot)
		JI2C2	JI2C1
	LAN		Slot4 PCI-E 2.0 x8 (in x16 Slot)
	CTRL
			Slot3 PCI-E 2.0 x8
	BMC
	CTRL		Slot2 PCI-E 2.0 x16
DP5	BMC Graphics
A	Memory		Slot1 PCI-E 2.0 x8
	1
	A		COM2
JPG1	SMBUS1 JLPC80
JPL1

DP4

				I-FAN2					FAN3
			Intel
			IOH-36D					JBAT1
							BIOS
				Intel			JBT1	FLOPPY	IDE
				IOH-36D
							Intel
							ICH 10R
							(SouthBridge)	JIDE1
				JPI1			I-FAN1		FAN4
				1394
S I/O	JPT1	J14	JP5	CTRL			I-SATA3 I-SATA1
			J15 J139USB6/7	1394-1 1394-2			JUSB5
			JP4				I-SATA5
JL1 JWD1			JUSB4 CNF1		CNF2	JP9 JUSB2	I-SATA4 I-SATA2 I-SATA0		JOH1

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