Biostar Z490GTA Manual page 18

Note
» When using the front HD audio jack and plug in the headset, the rear sound will be automatically
Disabled.
» It is recommended that you connect a high-definition front panel audio module to this connector to
avail of the motherboard's high definition audio capability.
» Please try to disable the "Front Panel Jack Detection" if you want to use an AC'97 front audio output
cable. The function can be found via O.S. Audio Utility.
COM: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
12V_LED: RGB LED Device (5050 SMD) Header
This header providers 12V power and RGB control pins for RGB LED Device (5050 SMD).
5V_LED1/ 5V_LED2: Addressable RGB LED Device (WS2818B) Header
This header providers 5V power and Data control pins for RGB LED Device (WS2818B).
» Continued on Next Page
18 | Chapter 2: Hardware installation
Pin Assignment
1 Carrier detect
2 Received data
3 Transmitted data
4 Data terminal ready
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator
10 Key
Pin Cable Color Assignment
1 12V (Black) VCC12
2 G (Green) LED_GREEN
3 R (Red) LED_RED
4 B (Blue) LED_BLUE
Pin Assignment
1 VCC5
2 Data
3 N/A
4 GND