Gigabyte Z390 D User Manual page 18

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13) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
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14) COM (Serial Port Header)
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_
B
15) THB_C (Thunderbolt
This connector is for a GIGABYTE Thunderbolt
16) BAT (Battery)
The battery provides power to keep the values (such as BIOS configurations, date, and time information)
in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low
F_USB3 F_USB30 3
level, or the CMOS values may not be accurate or may be lost.
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B
F_USB3 F
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S _
Pin No. Definition
1
11
1
2
3
12 2
4
5
6
Pin No. Definition
1
9
1
2
3
10 2
4
5
Add-in Card Connector)
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1
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.
Pin No. Definition
7
LAD0 LAD3
8
VCC3 GND
9
LAD1 LFRAME
10
No Pin NC
11
LAD2 SERIRQ
12
LCLK LRESET
Pin No. Definition
NDCD- 6 NDSR-
NSIN 7 NRTS-
NSOUT 8 NCTS-
NDTR- 9 NRI-
GND 10 No Pin
add-in card.
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Supports a Thunderbolt add-in card.
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