SUPER MICRO Computer X9SPU-F user manual Clear Cmos JBT1, PCI Slot SMB Enable JI2C2/ JI2C3

Chapter 2: Installation

Clear CMOS (JBT1)

JBT1 is used to clear CMOS. Instead of pins, this "jumper" consists of contact pads to prevent accidental clearing of CMOS. To clear CMOS, use a metal object such as a small screwdriver to touch both pads at the same time to short the connection. Always remove the AC power cord from the system before clearing CMOS.

Important: For an ATX power supply, you must completely shut down the system, remove the AC power cord and then short JBT1 to clear CMOS.

PCI Slot SMB Enable (JI2C2/ JI2C3)

Use Jumpers JI2C2/JI2C3 to enable PCI SMB (System Management Bus) support to improve system manage- ment for the PCI slots. See the table on the right for jumper settings.

PCI Slot SMB Enable (JI2C)

Jumper Settings

Setting	Definition
Short	Enabled (Default)
Open	Disabled

BIOS EEPROM Power (J29)

Jumper J29 is used to enable or dis- able power to the BIOS EEPROM chip. This feature is reserved for factory use only, therefore it is rec- ommended that the jumper remains shorted or enabled during normal operation.

BIOS EEPROM Power (J29)

Jumper Settings

Setting	Definition
Short	Enabled (Default)
Open	Disabled

KB/MS

USB4/5/IPMI_LAN

USB3.0-2/3

COM2

FAN1

FAN2

JI2C1 VGA

UID-LED

COM1

LAN1

LAN2

UIOP

+	J29
		CPU
CLEAR
CMOS		JF1
		+
JBT1	CODE
	MAC
REV:1.00	CODE	DIMMA1
		DDR3 1600/1333/1066 UDIMM/RDIMM required
X9SPU-FDESIGNED IN USA	BAR	DIMMA2
		DIMMB1
JSD1:DOM PWR
		DIMMB2
SBX2: PCI-E 2.0 X4 in X8
SBX1: PCI-E 3.0/2.0 X16 or X8+X8		SBX3: PCI-E 2.0 X4
		USB 12/13	USB 3.0-0/1

FAN3

FAN4

FAN5

JI2C2

2-27