Gigabyte Z590 GAMING X AX User Manual page 21

14) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports via an
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
9 1
10 2
• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB 2.0/1.1 header.
• Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord
from the power outlet to prevent damage to the USB bracket.
15) THB_C1/THB_C2 (Thunderbolt
The connectors are used to connect to a GIGABYTE Thunderbolt
1
THB_C1
THB_C2
16) 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.
9 1
10 2
Pin No. Definition Pin No. Definition
1 Power (5V) 6
2 Power (5V) 7
3 USB DX- 8
4 USB DY- 9
5 USB DX+ 10
Add-in Card Connectors)
™
1
Supports a Thunderbolt
Pin No. Definition Pin No. Definition
1 NDCD- 6
2 NSIN 7
3 NSOUT 8
4 NDTR- 9
5 GND 10
- 21 -
USB DY+
GND
GND
No Pin
NC
add-in card.
™
add-in card.
™
NDSR-
NRTS-
NCTS-
NRI-
No Pin