AXIOMTEK SYM76996VGGA Manual page 16

SATA2/3/4/5: Serial ATA2 Connectors
The connectors connect to Serial ATA 3.0Gb/s hard disk drive and optical disc
drive.
F_USB1/2/3: USB 2.0 Connectors
The mainboard provides 3 front USB pin connector, allowing up to 6 additional
USB 2.0 ports up to maximum throughput of 480 Mbps. Connect the USB cable
into the pin header for using high-speed USB interface peripherals.
Pin Assignment
1 GND
2 TX+
3 TX-
4 GND
5 RX-
6 RX+
7 GND
Pin Assignment Pin Assignment
1 +5V (fused) 2
3 USB- 4
5 USB+ 6
7 Ground 8
9 Key 10
15
+5V (fused)
USB-
USB+
Ground
NC