Gigabyte A520M H User Manual - Page 18

B B __ 3 S B_ B S 15) COM (Serial Port Header) S The COM header can provide one serial port via an optional COM port cable. For purchasing the optional COM port cable, please contact the local dealer. _S S_ _ 9 B1 10 2 _U _ B Pin No. 1 2 3 4 5 Definition NDCDNSIN NSOUT NDTRGND Pin No. Definition 6 NDSR- 7 NRTS- 8 NCTS- 9 NRI- 10 No Pin F F_USB3 F _0 _ _B 16) TPM (Trusted Platform Module Header) You m_ay connect a TPSM_ (Trusted Platform Module) to this header. _F Pin No. Definition Pin No. Definition 11 1 1 LAD0 7 LAD3 12 2 2 VCC3 8 GND 3 LAD1 9 LFRAME 4 No Pin 5 LAD2 10 NC 11 SERIRQ _ 0 F 6 LCLK 12 LRESET S F_ 17) CLR_CMOS (Clear CMOS Jumper) Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clear the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds. B B_ Open: Normal Short: Clear CMOS Values _3 U •• Always turn off your computer before clearing the CMOS values. •• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or manually configure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS configurations). F_USB3 F_USB30 3 - 18 -