The setup of the configuration jumpers on the SBC is described below. * indicates the default value of each jumper.

NOTE:
For two-position jumpers (3-post), "TOP" is toward the memory sockets; "BOTTOM" is toward the edge fingers.

JU5/JU7 Speed LED - LAN 1/LAN 2
These jumpers are used in conjunction with the Link/Speed LEDs for LAN 1 (JU5) and LAN 2 (JU7). The LEDs are located on the SBC's LAN connectors. For further information see the Ethernet LEDs and Connectors section.

Install to use the Link/Speed LED to indicate that the Ethernet interface has a valid link at either 1000-Mb/s or 100-Mb/s.

Green = valid link at 1000-Mb/s *
Orange = valid link at 100-Mb/s

Remove to use the Link/Speed LED to indicate that the Ethernet interface has a valid link at either 100-Mb/s or 10Mb/s.

Green = valid link at 100-Mb/s
Orange = valid link at 10-Mb/s

JU8 PASSWORD CLEAR
Install for one power-up cycle to reset the password to the default (null password).
Remove for normal operation. *

JU9 SCSI Termination
This jumper may be used to enable or disable on-board active termination for the Ultra160 SCSI interface.

Install on the TOP to enable active termination *
Install on the BOTTOM to allow the AIC-7892 to control termination.
Remove to disable active termination.

JU10/JU11 SYSTEM FLASH ROM OPERATIONAL MODES
The Flash ROM has two programmable sections: the Boot Block for "flashing" in the BIOS and the Main Block for the executable BIOS and PnP parameters.

Normally only the Main Block is updated when a new BIOS is flashed into the system

	JU10	JU11
All Blocks Write Enabled	Remove *	Remove *
Boot Block Write Protected	Install	Remove
Block 2-16 Write Protected	Remove	Install

JU12 CMOS CLEAR
Install on the TOP to operate.*
Install on the BOTTOM to clear.

NOTE: The CMOS Clear jumper works on power-up. To clear the CMOS, power down the system, install the jumper, then turn the power back on. Wait for at least two seconds and turn the power off. Then remove the jumper and turn the power on. When AMIBIOS displays the "CMOS Settings Wrong" message, press F1 to go to the BIOS Setup Utility, where you may reenter your desired BIOS settings, load optimal defaults or load failsafe defaults.

ETHERNET LEDS AND CONNECTORS
Each Ethernet interface has two LEDS for status indication and an RJ-45 network connector.

LED/Connector	Description
Activity LED	Orange LED which indicates network activity. This Is the upper LED on the LAN connector (i.e.,toward the memory sockets).
Off	Indicates there is no current network transmit or receive activity.
On (flashing)	Indicates network transmit or receive activity.
Link/Speed LED	Bi-color (green/orange) LED which identifies the link status and connection speed. This is the lower LED on the LAN connector (i.e., toward the edge connectors).
Green	Indicates a valid link at either 1000-Mb/s or 10-Mb/s, depending on the setting of the associated Speed LED jumper (JU5 or JU7).
Orange	Indicates a valid link at 100-Mb/s, regardless of the setting of the associated Speed LED jumper (JU5 or JU7).
	NOTE: For further information on the Speed LED Jumpers, see the Jumpers section.

LED/Connector	Description
RJ-45 Network	The RJ-45 network connector requires a category 5 (CAT5) unshielded twisted-pair (UTP) 2-pair cable for a 100-Mb/s network connection or a category 3 (CAT3) or higher UTP 2-pair cable for a 10-Mb/s network connection. A category 5e (CAT5e) or higher UTP 2-pair cable is recommended for a 1000-Mb/s (Gigabit) network connection.

NOTE:
Pin 1 on the connectors is indicated by the square pad
on the PCB.

P1 - 10/100/1000Base-T Ethernet Connectors - LAN2
8 pin shielded RJ-45 connector, Belfuse #0826-1X1T-23

PIN SIGNAL 1 TRP1+ 2 TRP1- 3 TRP2+ 4 TRP3+

PIN SIGNAL 5 TRP3- 6 TRP2- 7 TRP4+ 8 TRP4-

P3 - FLOPPY DRIVE CONNECTOR
34 pin dual row header, AMP #103308-7

PIN SIGNAL 1 Gnd 3 Gnd 5 Gnd 7 Gnd 9 Gnd 11 Gnd 13 Gnd 15 Gnd 17 Gnd 19 Gnd 21 Gnd 23 Gnd 25 Gnd 27 Gnd 29 Gnd 31 Gnd 33 Gnd

PIN SIGNAL 2 N-RPM 4 NC 6 D-Rate0 8 P-Index 10 N-Motoron 1 12 N-Drive Sel2 14 N-Drive Sel1 16 N-Motoron 2 18 N-Dir 20 N-Stop Step 22 N-Write Data 24 N-Write Gate 26 P-Track 0 28 P-Write Protect 30 N-Read Data 32 N-Side Select 34 Disk Chng

P4A - KEYBOARD HEADER
5 pin single row header, Amp #640456-5

PIN SIGNAL 1 Kbd Clock 2 Kbd Data 3 Key 4 Kbd Gnd 5 Kbd Power (+5V fused) with self-resetting fuse

P5 - SPEAKER PORT CONNECTOR
4 pin single row header, Amp #640456-4

PIN SIGNAL 1 Speaker Data 2 Key 3 Gnd 4 +5V

P6 - SERIAL PORT 1 CONNECTOR
10 pin dual row header, Amp #103308-1

PIN SIGNAL 1 Carrier Detect 3 Receive Data-I 5 Transmit Data-0 7 Data Terminal Ready-0 9 Signal Gnd

PIN SIGNAL 2 Data Set Ready-I 4 Request to Send-O 6 Clear to Send-I 8 Ring Indicator-I 10 NC

P7 - SERIAL PORT 2 CONNECTOR
10 pin dual row header, Amp #103308-1

PIN SIGNAL 1 Carrier Detect 3 Receive Data-I 5 Transmit Data-0 7 Data Terminal Ready-0 9 Signal Gnd

PIN SIGNAL 2 Data Set Ready-I 4 Request to Send-O 6 Clear to Send-I 8 Ring Indicator-I 10 NC

P8 - PARALLEL PORT CONNECTOR
26 pin dual row header, Amp #103308-6

PIN SIGNAL 1 Strobe 3 Data Bit 0 5 Data Bit 1 7 Data Bit 2 9 Data Bit 3 11 Data Bit 4 13 Data Bit 5 15 Data Bit 6 17 Data Bit 7 19 ACK 21 Busy 23 Paper End 25 Slct

PIN SIGNAL 2 Auto Feed XT 4 Error 6 Init 8 Slct In 10 Gnd 12 Gnd 14 Gnd 16 Gnd 18 Gnd 20 Gnd 22 Gnd 24 Gnd 26 NC

P9 - PS/2 MOUSE AND KEYBOARD CONNECTOR
6 pin mini DIN, Kycon #KMDG-6S-B4T

PIN SIGNAL 1 Ms Data 2 Kbd Data 3 Gnd 4 Power (+5V fused) with self-resetting fuse 5 Ms Clock 6 Kbd Clock

P9A - PS/2 MOUSE HEADER
6 pin single row header, Amp #640456-6

PIN SIGNAL 1 Ms Data 2 Reserved 3 Gnd 4 Power (+5V fused) with self-resetting fuse 5 Ms Clock 6 Reserved

P10 - EXTERNAL RESET CONNECTOR
2 pin single row header, Amp #640456-2

PIN SIGNAL 1 External Reset In (Low Active) 2 Gnd

P11 - PRIMARY IDE HARD DRIVE CONNECTOR
40 pin dual row header, 3M #30340-6002HB

PIN SIGNAL 1 Reset 3 Data 7 5 Data 6 7 Data 5 9 Data 4 11 Data 3 13 Data 2 15 Data 1 17 Data 0 19 Gnd 21 DRQ 0 23 IOW 25 IOR 27 IORDY 29 DACK 0 31 IRQ 14 33 Add 1 35 Add 0 37 CS 1P 39 IDEACTP

PIN SIGNAL 2 Gnd 4 Data 8 6 Data 9 8 Data 10 10 Data 11 12 Data 12 14 Data 13 16 Data 14 18 Data 15 20 NC 22 Gnd 24 Gnd 26 Gnd 28 SELPDP 30 Gnd 32 NC 34 PCBL DET * 36 Add 2 38 CS 3P 40 Gnd

* For ATA/66 and ATA/100 drives, which should be set for Cable Select for proper speed operation. If other Drives are detected, pin definition is Gnd.

P11A - SECONDARY IDE HARD DRIVE CONNECTOR
40 pin dual row header, 3M #30340-6002HB

PIN SIGNAL 1 Reset 3 Data 7 5 Data 6 7 Data 5 9 Data 4 11 Data 3 13 Data 2 15 Data 1 17 Data 0 19 Gnd 21 DRQ 1 23 IOW 25 IOR 27 IORDY 29 DACK 1 31 IRQ15 33 Add 1 35 Add 0 37 CS 1S 39 IDEACTS

PIN SIGNAL 2 Gnd 4 Data 8 6 Data 9 8 Data 10 10 Data 11 12 Data 12 14 Data 13 16 Data 14 18 Data 15 20 NC 22 Gnd 24 Gnd 26 Gnd 28 SELPDS 30 Gnd 32 NC 34 SCBL DET * 36 Add 2 38 CS 3S 40 Gnd

* For ATA/66 and ATA/100 drives, which should be set for Cable Select for proper speed operation. If other drives are detected, pin definition is Gnd.

P12 - HARD DRIVE LED CONNECTOR
4 pin single row header, Amp #640456-4

PIN SIGNAL 1 LED + 2 LED - 3 LED - 4 LED +

P13 - ULTRA160 SCSI CONNECTOR
68 pin high density connector, Amp #749069-7

PIN SIGNAL 1 SCD12 2 SCD13 3 SCD14 4 SCD15 5 SCDPH 6 SCD0 7 SCD1 8 SCD2 9 SCD3 10 SCD4 11 SCD5 12 SCD6 13 SCD7 14 SCDPL 15 Gnd 16 DIFSENSE 17 TERMPWR 18 TERMPWR 19 NC 20 Gnd 21 SCATN 22 Gnd 23 SCBSY 24 SCACK 25 SCRST 26 SCMSG 27 SCSEL 28 SCCD 29 SCREQ 30 SCIO 31 SCD8 32 SCD9 33 SCD10 34 SCD11

PIN SIGNAL 35 SCD#12 36 SCD#13 37 SCD#14 38 SCD#15 39 SCDPH# 40 SCD#0 41 SCD#1 42 SCD#2 43 SCD#3 44 SCD#4 45 SCD#5 46 SCD#6 47 SCD#7 48 SCDPL# 49 Gnd 50 Gnd 51 TERMPWR 52 TERMPWR 53 NC 54 Gnd 55 SCATN# 56 Gnd 57 SCBSY# 58 SCACK# 59 SCRST# 60 SCMSG# 61 SCSEL# 62 SCCD# 63 SCREQ# 64 SCIO# 65 SCD#8 66 SCD#9 67 SCD#10 68 SCD#11

P15 - VIDEO INTERFACE CONNECTOR
15 pin HD15 connector, Amp #1-1470250-3

PIN SIGNAL 1 Red 2 Green 3 Blue 4 NC 5 Gnd

PIN SIGNAL 6 Gnd 7 Gnd 8 Gnd 9 +5V 10 Gnd

PIN SIGNAL 11 NC 12 EEDI 13 HSYNC 14 VSYNC 15 EECS

P16 - 10/100/1000BASE-T ETHERNET CONNECTOR - LAN1
8 pin shielded RJ-45 connector, Belfuse #0826-1X1T-23

PIN SIGNAL 1 TRP1+ 2 TRP1- 3 TRP2+ 4 TRP3+

PIN SIGNAL 5 TRP3- 6 TRP2- 7 TRP4+ 8 TRP4-

P17 - UNIVERSAL SERIAL BUS (USB) CONNECTOR
8 pin dual row header, Molex #702-46-0821
(+5V fused with self-resetting fuses)

PIN SIGNAL 1 +5V - USB0 3 USB0- 5 USB0+ 7 Gnd - USB0

PIN SIGNAL 2 +5V - USB1 4 USB1- 6 USB1+ 8 Gnd - USB1

P18 - SYSTEM HARDWARE MONITOR CONNECTOR
4 pin single row header, Amp #640456-4

PIN	SIGNAL
1	Gnd
2	GPO (General Purpose Output)
3	CI (Chassis Intrusion Input)
4	OVT (Over Temperature)

P19 - CPU FAN
3 pin single row header, Molex #22-23-2031

PIN SIGNAL 1 Gnd 2 +12V 3 FanTach

P21 - POWER GOOD LED
2 pin single row header, Amp #640456-2

PIN SIGNAL 1 LED - 2 LED +

P22 - SYSTEM MANAGEMENT BUS CONNECTOR
2 pin single row header, Amp #640456-2

PIN SIGNAL 1 SMB Clock 2 SMB Data

P24 - +12V VRM POWER INPUT
4 pin header, Molex #39-29-3046

PIN SIGNAL 1 GND 2 GND 3 +12V 4 +12V

P27 - SATA PORT1
7 pin vertical connector, Molex #67491-0031

PIN SIGNAL 1 Gnd 2 TX+ 3 TX- 4 Gnd 5 RX- 6 RX+ 7 Gnd

P28 - SATA PORT2
7 pin vertical connector, Molex #67491-0031

PIN SIGNAL 1 Gnd 2 TX+ 3 TX- 4 Gnd 5 RX- 6 RX+ 7 Gnd

The Double Data Rate (DDR) memory interface supports up to 2GB of memory and can operate as either a single-channel (64-bit) or dual-channel (128-bit) DDR interface. Each of the channels terminates in a dual in-line memory module (DIMM) socket. Installing two identical DIMMs doubles the interface bandwidth. The System BIOS automatically detects memory type, size and speed.

The SBC uses industry standard 72-bit wide ECC or 64-bit wide non-ECC gold finger PC2100, PC2700 or PC3200 memory modules in two 184-pin sockets.

NOTE: Memory modules can be installed in one or both DIMM sockets. If two modules of different speeds are used, the DIMMs will operate in dual-channel mode at the speed of the slowest DIMM. If the modules are different sizes, they will operate in single-channel mode. Registered DIMMs are not supported. All memory modules must have gold contacts.

The SBC supports DIMMs which are PC2100/PC2700/PC3200 compliant and have the following features:

• 184-pin with gold-plated contacts
• ECC (72-bit) or non-ECC (64-bit) DDR memory
• Unbuffered configuration

The following DIMM sizes are supported:

* Intel and Pentium are registered trademarks of Intel Corporation.

All other product names are trademarks of their respective owners.

MX8 Product Detail.