Updated: Wednesday, June 12, 1996

Contents

• Motherboard Connectors
• Front Panel Connections
• Back Panel Connections

Motherboard Connectors
The motherboard contains shroudless stake pin header connections for cabling the serial, parallel, floppy, IDE and wave table interfaces. The CD-ROM header is shrouded, the audio interface is a female type connector. The diagram below shows the locations of these connectors and the orientation of pin 1 on each.

Front Panel Connections (J3A1, J2A1)
The Advanced/EV motherboard provides header connectors to support functions typically located on the chassis bezel:

Front panel features supported include:

• System Reset
• Power LED
• Keyboard Lock
• Hard Drive activity LED
• Turbo LED
• System Speaker
• Auxiliary System Fan
• Infra-Red (IrDA) port
• Sleep/Resume
• Power Supply On

• Sleep/Resume
  This two pin header, when connected to a momentary switch, can be used to put the system into a power managed state (Stand By) that will reduce the system’s power consumption. If the system is in Standby mode and the switch is closed, the system will instantly "wake up" or resume full system activity. (System activity will also resume when an external interrupt, such as a keystroke or mouse movement, occurs.) When used with a power supply with a high efficiency rating, the Advanced/EV is easily capable of reducing the system power to below EPA Energy Star requirements. The function of the Sleep/Resume button can also be achieved via the keyboard with a hot key sequence (programmable using CMOS setup). This connector can be found in two locations on the Advanced/EV motherboard to minimize system cable requirements.

• Soft Power Down
  When used with a power supply that supports remote power on/off, the Advanced/EV motherboard can turn off the system power via software control. An APM command issued to the system BIOS will cause the power supply to turn off via the three-pin PS ON header connector. For example, Windows 95 will issue this APM command when the user clicks on the Shutdown icon. The PS ON connector is a Molex 2695 3-pin connector which features a security latch. Power can be restored via a front panel power button when it is connected to the S_OFF two pin header.

  By implementing a dual-pole momentary switch from the power button to the S_OFF/SLEEP four-pin header connector, both sleep/resume and power resume functions can be supported via a single button. In this configuration, pressing the button (closing the switch) while the system is active will put the motherboard into Stand By mode, pressing the button while in Stand By will cause the system to Resume to full operation. When the system has been completely powered off via software control as mentioned above, pressing the button will turn the system ON invoking POST.

• Infrared (IrDA) connector
  Serial port 2 can be configured to support an IrDA module via a 5 pin header connector. Once configured for IrDA, the user can transfer files to/from portable devices such as laptops, PDAs and printers using application software such as LapLink*. The IrDA specification provides for data transfers at 115kbps from a distance of 1 meter.

• Speaker
  The external speaker provides error beep code information during the Power-On Self Test if the system cannot use the video interface.

Back Panel Connections
The back panel provides external access to PS/2 style keyboard and mouse connectors integrated on some Advanced/EV motherboards. A standard AT-style keyboard connector (in place of the PS/2 style connectors) is available on some other configurations.

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