User`s manual

B75MU3+

F_USB1/F_USB2: Headers for USB 2.0 Ports at Front Panel

These headers allow user to connect additional USB cable on the PC front panel,

and also can be connected with internal USB devices, like USB card reader.

Assignment

1 +5V (fused)

2 +5V (fused)

3 USB-

4 USB-

5 USB+

6 USB+

7 Ground

8 Ground

9 Key

F_USB1

F_USB2

10 NC

JFRONT_USB3_1: Header for USB 3.0 Ports at Front Panel

This header allows user to connect additional USB cable on the PC front panel,

and also can be connected with internal USB devices, like USB card reader.

20 11

Pin Assignment Pin Assignment

1 VBUS0 11 D2+

2 SSRX1- 12 D2-

3 SSRX1+ 13 Ground

4 Ground 14 SSTX2+

5 SSTX1- 15 SSTX2-

6 SSTX1+ 16 Ground

7 Ground 17 SSRX2+

8 D1- 18 SSRX2-

9 D1+ 19 VBUS1

10 ID 20 Key

NOTE: USB3.0 is only supported by Windows 7.