Gigabyte Z490 UD AC User Manual page 19

14) THB_C1/THB_C2 (Thunderbolt
_
B
The connectors are used to connect to a GIGABYTE Thunderbolt™ add-in card
S B_
B
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_
_
B
_ U
_
B
F_USB3 F
16) SPI_TPM (Trusted Platform Module Header)
You may connect an SPI TPM (Trusted Platform Module) to this header.
_
17) QFLASH_PLUS (Q-Flash Plus Button)
Q-Flash Plus allows you to update the BIOS when your system is off (S5 shutdown state). Save the latest
BIOS on a USB thumb drive and plug it into the dedicated port, and then you can now flash the BIOS
automatically by simply pressing the Q-Flash Plus button. The QFLED will flash when the BIOS matching
and flashing activities start and will stop flashing when the main BIOS flashing is complete.
S F_
B_
1 THB_C2
THB_C1
1
Pin No. Definition
9 1
1
2
3
10 2
4
5
Pin No. Definition
S _
1
11 1
2
3
4
12 2
5
6
QFLED
QFLASH_PLUS
For how to use Q-Flash Plus please visit the "Unique Features" webpage of GIGABYTE's website.
Add-in Card Connectors)
B S_
™
B
Supports a Thunderbolt add-in card.
™
Pin No. Definition
NDCD- 6 NDSR-
NSIN 7 NRTS-
NSOUT 8 NCTS-
F
NDTR- 9 NRI-
GND 10 No Pin
_ 0
Pin No. Definition
7
Data Output Chip Select
8
Power (3.3V) GND
_ F
9
No Pin IRQ
10
NC NC
11
Data Input NC
12
CLK RST
_ 0 F
_3 U
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S
S