SUPER MICRO Computer AS 1020C-3 H8DCR-3 Quick Reference, Jumpers Description Default Setting

Chapter 5: Advanced Serverboard Setup

H8DCR-3 Quick Reference

Jumpers	Description	Default Setting
J3P	3rd Power Fail Detect En/Dis	Closed (Enabled)
JBT1	CMOS Clear	See Section 2-7
JCF1	Compact Flash Select	Closed (Master)
JI2C1/2	I2C to PCI Enable/Disable	Closed (Enabled)
JPG1	VGA Enable/Disable	Pins 1-2 (Enabled)
JPL1/JPL2	LAN1/2 Enable/Disable	Pins 1-2	(Enabled)
JPS1	SAS Controller En/Disable	Pins 1-2	(Enabled)
JPX1A/JPX2A	PCI-X Slot #7/6 Freq. Select	Open (Auto)
JD1	Internal Speaker En/Disable	Pins 6-7 (Enabled)
JWD	Watch Dog	Pins 1-2	(Reset)

Connectors	Description
COM1/COM2	Serial Ports
FAN 1-5	System Fan Headers
JIDE#1/JIDE#2	IDE Drive Connectors
J1B4	20-Pin ATX Power Connector
J22	System Management Bus Header
J32	4-pin Auxiliary Power Connector
JAR	Power Supply Alarm Reset Header
JD1	Onboard Speaker/Keylock/Power LED
JF1	Front Panel Connector
JFDD1	Floppy Disk Drive Connector
JL1	Chassis Intrusion Header
LAN1/2	Gigabit Ethernet (RJ45) Ports
JOH1	Overheat Warning Header
JPW2	8-Pin Processor Power Connector
JPWF	Power Fail Connector
JS4	I2C Connector for SAS Backplane
JSLED1	SAS Drive Activty LEDs
JSM1 /JSM2	SAS 4-7/SAS 0-3 Ports
JUSB2	Additional USB Headers (USB2/3)
JWF1	Compact Flash Power Connector
JWOL	Wake-On-LAN Header
JWOR	Wake-On-Ring Header
PS_SMBUS	Power Supply I2C Header
SATA0-3	Serial ATA Ports
USB0/1	Universal Serial Bus (USB) Ports 0/1

Onboard Indicators	Description
DP1	Power Standby LED
DS1-8	SAS Activity LEDs

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