Asus PRIME B760M-PLUS Users Manual English - Page 17

13. Clear CMOS header The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords, and system setup parameters. CLRTC To erase the RTC RAM: PIN 1 1. Turn OFF the computer and unplug the power cord. 2. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds. 3. Plug the power cord and turn ON the computer. 4. Hold down the key during the boot process and enter BIOS setup to reenter data. DO NOT short-circuit the pins except when clearing the RTC RAM. Short-circuiting or placing a jumper cap will cause system boot failure! If the steps above do not help, remove the onboard button cell battery and short the two pins again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the button cell battery. 14. COM Port header The COM (Serial) Port connector allows you to connect a COM port module. Connect the COM port module cable to this connector, then install the module to a slot opening on the system chassis. COM PIN 1 DCD TXD GND RTS RI RXD DTR DSR CTS 15. Front Panel Audio header F_AUDIO The Front Panel Audio header is for a chassis-mounted front panel audio I/O module that supports HD Audio. Connect one PIN 1 PORT1L PORT1R end of the front panel audio I/O module cable to this header. PORT2R SENSE_SEND PORT2L AGND NC SENSE1_RETUR SENSE2_RETUR HD-audio-compliant pin definition 16. LPT header The LPT (Line Printing Terminal) header supports devices such as a printer. LPT standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible computers. LPT 17. S/PDIF Out header The S/PDIF Out header allows you to connect the Sony/Philips Digital Interface (S/PDIF) Out module. SPDIF_OUT Motherboard User Manual 1-5