Biostar B550MH User Manual page 15

PANEL1: Front Panel Header
This connector includes Power-on, Reset, HDD LED and Power LED connections. It allows user
to connect the PC case's front panel switch functions.
PC-SPKR1: Chassis Speaker Header
Please connect the chassis speaker to this header.
SATA1/ SATA2/ SATA3/ SATA4: Serial ATA 6.0 Gb/s Connectors
These connectors connect to SATA hard disk drives via SATA cables.
Pin Assignment Function Pin Assignment
1 HDD LED(+) HDD
LED
3 HDD LED(-)
5 Ground Reset
Button
7 Reset Control
9 NC NC
Pin Assignment
1 +5V
2 N/A
3 N/A
4 Speaker
Pin Assignment
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
Chapter 2: Hardware installation | 15
B550MH
Function
2 Power LED (+) Power
LED
4 Power LED (-)
6 Power Button Power-On
Button
8 Ground
10 NA NA