A CD-ROM (ATAPI) (J2C2) L Diskette drive (J10F1) B Optional Line-In (J2C1) M Front panel (J10D1) C Telephony (J1C1) N Primary and secondary IDE (J9D1, J9D2) D CD-ROM (2 mm) (J2C3) O Optional PC/PCI (J8D2) E Optional fan 1 (J2J1) P Optional AMC (J7F1) F 242-contact slot connector (J4F1) Q ISA slot (J4A2) G Fan 2 (J4J1) R Optional Wake on LAN technology (J4A1) H Fan 3 (J5J1) S Optional Wake on Ring (J3A2) J DIMMs (J6F1, J6F2) T Optional chassis intrusion (J3A1) I Optional TV Out (J6J1) U PCI slots (J4C1, J4B1) K Power supply (J7H1)

Power Supply Connector
When used with an ATX-compliant power supply that supports remote power on/off, the motherboard can turn off the system power through software control. See Section 6.2 for information about the ATX specification. To enable soft-off control in software, advanced power management must be enabled in the Setup program and in the operating system. When the system BIOS receives the correct APM command from the operating system, the BIOS turns off power to the computer. If power to the computer is interrupted by a power outage or a disconnected power cord then power resumes, the computer returns to the power state it was in before power was interrupted (on or off). In addition, the motherboard supports the use of small form factor SFX power supplies. An SFX power supply uses the same connector as an ATX power supply, but does not provide -5 V to the motherboard. For more information about the SFX specification, see the Technical Product Specification

Front Panel Connectors

Jumper Locations and Definitions
The motherboard has a single jumper block at location J8E1. The 3-pin jumper block enables all motherboard configuration to be done in Setup. The figure below shows the location of the configuration jumper block, and the table describes the jumper settings for normal, configure and recovery modes.

Processors Supported
Different versions of the MU440EX motherboard provide different processor support. A small barcoded label, similar to the diagram shown below, can be found on the component side of the motherboard. The numbers following the letters "PBA" or "AA" can help identify the version of your motherboard.



Also, note whether your BIOS version is 4M4UE0X1 or 4M4UE0X3. After locating the PBA or AA number and BIOS version, consult the tables below to determine which processors are supported by that motherboard.

Supports only Intel® Celeron™ processors 266, 300, 300A, 333, 366, and 400 MHz:

Supports both Pentium® II processors with 66 MHz Front Side Bus and Intel® Celeron processors 266, 300, 300A, 333, 366 and 400 MHz:

Note 1: In the table below, support is available beginning at the -xxx level shown and any subsequent -xxx revisions.
Note 2: Support for Intel® Celeron™ processors 300A, 333, 366 or 400 MHz requires either BIOS 4M4UE0X1.86A.0011.P10 or later or BIOS 4M4UE0X3.86A.0004.P03 or later--depending on which version (4M4UE0X1 or 4M4UE0X3) matches your board.

Warning: Processors not specifically listed by type and rated speed may have requirements that are not supported by the motherboard's design. Use of unsupported processors may result in improper operation, damage to the motherboard or processor or reduced product life.

Intel® MU440EX Motherboard Technical Notes:
Installing the Retention Mechanism
There are at least two types of fasteners used to attach the retention mechanisms to the motherboard:

1. Retention mechanisms with captive brass fasteners
To install retention mechanisms with captive brass fasteners, simply use a Number 2 Phillips screwdriver to screw the fasteners on the pre-installed brass Pemstuds.

2. Retention mechanisms with plastic fasteners
To install the retention mechanisms with plastic fasteners:

1. Leave space below each mounting hole for the fastener to protrude through the hole.
   
2. Find the slot 1 connector on the motherboard.
   
3. Position the retention mechanism on the motherboard next to the slot 1 connector.
   
4. Push down on the retention bracket until the black plastic fasteners are correctly seated and the retention mechanism fits snugly against the board.
   

Critical Step - Push each white retainer pin into its respective black fastener until the head of each pin is seated onto the head of each fastener.

When installing the retention mechanism, make sure the motherboard is supported so that it will not bend while the retention mechanism is being pressed into the mounting holes. Do not place the motherboard on a hard surface to install the retention mechanism. Placing the motherboard on a hard flat surface can push the retention mechanism posts upwards so that the retainer pins are unable to fully secure the mechanism. This can cause the retention mechanism to become loose allow the processor could fall out. Instead to install the retention mechanism with the motherboard on anti-static foam (for example, the foam used to boxed Intel® motherboards for shipping).

CD-ROM or Second IDE Hard Drive Issues:
There are two known issues involving CD-ROM or secondary hard drives:

1. The retail version of Microsoft Windows® 95 may not recognize the Intel® 82371EB PIIX4e IDE controller used on Intel motherboards, causing the secondary IDE channel to be disabled. This can result in IDE devices (such as CD-ROM drives) not being detected or disappearing after the system is rebooted. A utility is available to update the MSHDC.INF file and resolve the issue.
2. Windows® 95 also may fail to recognize a CD-ROM drive that does not comply with the ATAPI specification. A technical advisory covers this issue for Intel motherboards using the 82371EB PIIX4e IDE controller.