Biostar A520MH Manual page 19

SATA1/ SATA2/ SATA3/ SATA4: Serial ATA 6.0 Gb/s Connectors
These connectors connect to SATA hard disk drives via SATA cables.
JFRONT_USB3_1/ JFRONT_USB3_2: Header for USB 3.2 (Gen1) Ports at Front Panel
(JFRONT_USB3_2 only for B550MH)
This header allows user to add additional USB ports on the PC front panel, and also can be
connected with a wide range of external peripherals.
F_USB1/ F_USB2: Header for USB 2.0 Ports at Front Panel
This header allows user to add additional USB ports on the PC front panel, and also can be
connected with a wide range of external peripherals.
A520MH / B550MH
Pin Assignment
1 Ground
2 TX+
3 TX-
4 Ground
5 RX-
6 RX+
7 Ground
Pin Assignment Pin
1 VBUS0 11
2 SSRX1- 12
3 SSRX1+ 13
4 Ground 14
5 SSTX1- 15
6 SSTX1+ 16
7 Ground 17
8 D1- 18
9 D1+ 19
10 ID 20
Pin Assignment
1 +5V (fused)
2 +5V (fused)
3 USB-
4 USB-
5 USB+
6 USB+
7 Ground
8 Ground
9 Key
10 NC
Chapter 2: Hardware installation | 19
Assignment
D2+
D2-
Ground
SSTX2+
SSTX2-
Ground
SSRX2+
SSRX2-
VBUS1
Key