Gigabyte Z390 UD User Manual - Page 18

_ __ 3 B F F_USB3 F _ _B _0 13) TPM (Trusted Platform Module Header) You may connect a TPM (Trusted Platform Module) to this header. S_ S_ _ S _ Pin No. Definition Pin No. Definition U 11 1 1 LAD0 7 LAD3 2 VCC3 8 GND _ F 12 2 3 LAD1 9 LFRAME 4 No Pin 10 NC 5 LAD2 11 SERIRQ B_ 6 LCLK 12 LRESET 14) COM (Serial Port Header) _0 F 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 F_ 9 1 10 2 Pin No. 1 2 3 4 5 Definition NDCDNSIN NSOUT NDTRGND Pin No. 6 7 8 9 10 Definition NDSRNRTSNCTSNRINo Pin 15) THB_C (Thunderbolt™ Add-in Card Connector) This connector is for a GIGABYTE Thunderbolt™ add-in card. B_ S _S _ B_ USB 0_ B _ 1 _3 U Supports a Thunderbolt™ add-in card. _ _B F_USB3 F_USB30 3 F_USB3 16) BAT (Battery) The battery provides power to keep the values (such as BIOS configurations, date, and time information) F_iUnStBh3e0C3 MOS when the computer is turned off. Replace the battery when the battery voltage drops to a low level, or the CMOS values may not be accurate or may be lost. You may clear the CMOS values by removing the battery: 1. Turn off your computer and unplug the power cord. 2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal object like a screwdriver to touch the positive and negative terminals of the battery holder, making them short for 5 seconds.) 3. Replace the battery. 4. Plug in the power cord and restart your computer. •• Always turn off your computer and unplug the power cord before replacing the battery. •• Replace the battery with an equivalent one. Damage to your devices may occur if the battery is replaced with an incorrect model. •• Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain about the battery model. •• When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery (the positive side should face up). •• Used batteries must be handled in accordance with local environmental regulations. - 18 - S F_ _ S_