Biostar Z490GTA EVO User Manual page 16

ATX_12V_2X4_1/ ATX_12V_2X4_2: ATX Power Source Connector
The connector provides +12V to the CPU power circuit. If the CPU power plug is 4-pin, Please
refer to the following methods to install:
1. When Power Supply has two 8-pin CPU power plugs: please install at ATX_12V_2X4_1 and
ATX_12V_2X4_2.
2. When Power Supply has only one 8pin CPU power plug: please install it in ATX_12V_2X4_1
or ATX_12V_2X4_2.
3. When the Power Supply has only a 4-pin CPU power plug: Please install on Pin 1-2-5-6 of
ATX_12V_2X4_1 or Pin 1-2-5-6 of ATX_12V_2X4_2.
Note
» Before you power on the system, please make sure that both ATX, ATX_12V_2X4_1 and
ATX_12V_2X4_2 connectors have been plugged-in.
» Insufficient power supplied to the system may result in instability or the peripherals not functioning
properly. Use of a PSU with a higher power output is recommended when configuring a system with
more power-consuming devices.
F_PANEL: Front Panel Header
This 16-pin header includes Power-on, Reset, HDD LED, Power LED, and speaker connection.
16 | Chapter 2: Hardware installation
Pin Assignment
1 +12V
2 +12V
3 +12V
4 +12V
5 Ground
6 Ground
7 Ground
8 Ground
Pin Assignment Function
1 +5V
3 N/A Speaker
Connector
5 N/A
7 Speaker
9 HDD LED (+) Hard drive
11 HDD LED (-) LED
13 Ground Reset
15 Reset control button
Pin Assignment Function
2 N/A
N/A
4 N/A
6 N/A N/A
8 Power LED (+)
Power
10 Power LED (+)
LED
12 Power LED (-)
14 Power button Power-on
16 Ground button