[. . . ] Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners' benefit, without intent to infringe. · VIA and Apollo Pro133A are trademarks of VIA Technologies, Inc. · Intel, LANDesk, Pentium, and Celeron are trademarks of Intel Corporation. · IBM and OS/2 are registered trademarks of International Business Machines. [. . . ] 18) System Message LED Connector (2-pin MSG. LED) This 2-pin connector is for the system message LED that indicates receipt of messages from a fax/modem. The normal status for this LED is ON, when there is no incoming data signal. The system message LED feature requires an ACPI OS and driver support. 19) System Management Interrupt Connector (2-pin SMI) This 2-pin connector allows you to manually place the system into a suspend mode, or "Green" mode, where system activity is instantly decreased to save power and to expand the life of certain system components. 20) ATX Power Switch / Soft-Off Switch Connector (2-pin PWR. SW) The system power is controlled by a momentary switch attached to this connector. Pressing the button switches the system between ON and SLEEP, or ON and SOFT OFF, depending on the BIOS or OS settings. Pressing the button while in the ON mode for more than 4 seconds turns the system off. 21) Reset Switch Connector (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the power switch. This is a preferred method ASUS M4A89GTD PRO User's Manual 43 3. H/W SETUP Connectors 16) System Power LED Connector(3-1 pin PWR. LED) This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep, and turns dark in soft-off mode. Reset Ground 3. BIOS SETUP Updating BIOS 46 ASUS M4A89GTD PRO User's Manual 4. Update the BIOS only if you have problems with the motherboard and you know that the new BIOS revision will solve your problems. Careless updating can result in your motherboard having more problems!Download an updated ASUS BIOS file from the Internet (WWW or FTP) (see ASUS CONTACT INFORMATION on page 3 for details) and save to the boot floppy disk you created earlier. At the "A:\" prompt, type AFLASH and then press <Enter>. Type the filename of your new BIOS and the path, for example, A:\XXXXX. XXX, then press <Enter>. When prompted to confirm the BIOS update, press Y to start the update. ASUS M4A89GTD PRO User's Manual 47 4. The utility starts to program the new BIOS information into the Flash ROM. This minimizes the possibilities of boot problems in case of update failures. If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem still persists, load the original BIOS file you saved to the boot disk. [. . . ] S/W SETUP Applications 82 · · · · ASUS M4A89GTD PRO User's Manual 5. SOFTWARE SETUP · · · Microsoft DirectX Driver: Installs Microsoft DirectX driver. PC-cillin 2000 Vx. xx: Installs the PC-cillin virus protection software. Adobe Acrobat Reader Vx. x: Installs the Adobe Acrobat Reader software necessary to view user's manuals saved in PDF format. [. . . ]