Biostar Z270GT4 Manual page 15

ATXPWR2: ATX Power Source Connector
The connector provides +12V to the CPU power circuit. If the CPU power plug is 4-pin, please
plug it into Pin 1-2-5-6 of ATXPWR2.
Note
» Before you power on the system, please make sure that both ATXPWR1 and ATXPWR2 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.
PANEL1: Front Panel Header
This 16-pin header includes Power-on, Reset, HDD LED, Power LED, and speaker connection.
SATA_1/_2/_3L/_3U/_4L/_4U: Serial ATA Connectors
These connectors connect to SATA hard disk drives via SATA cables.
Note
» When using SATA SSD module on M.2 slot, the SATA_1 connector will be disabled.
Pin Assignment
1 +12V
2 +12V
3 +12V
4 +12V
5 Ground
6 Ground
7 Ground
8 Ground
Pin Assignment Function
1 +5V
2 N/A
Speaker
3 N/A Connector
4 Speaker
5 HDD LED (+) Hard drive
6 HDD LED (-) LED
7 Ground
Reset
button
8 Reset control
Chapter 2: Hardware installation | 15
H270GT4 & Z270GT4
Pin Assignment Function
9 N/A
N/A
10 N/A
11 N/A N/A
12 Power LED (+)
13 Power LED (+) Power LED
14 Power LED (-)
15 Power button Power-on
button
16 Ground
Pin Assignment
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground