Instruction Manual

3.6 USB CONNECTOR (USB1, USB2, USB3)

1 2 3 4

5 6 7 8 1.VCC

2.DATA0+

3.DATA0-

4.GND

5.VCC

6.DATA1+

7.DATA1-

8.GND

USB1&USB2

USB 3

1 9

2 10

1.VCC 6.DATA3+

2.GND 7.GND

3.DATA2- 8.DATA3-

4.GND 9.GND

5.DATA2+ 10.VCC

3.7 FAN POWER CONNECTOR

The AR-B1790 provides CPU cooling Fan connector. CPU connectors can supply 12V/500mA to the cooling fan.

3 2 1

FAN1 FOR CPU FAN

FAN2 FOR SYSTEM FAN

FAN3 FOR CASE FAN

3.8 DUAL ETHERNET PORT (PT3)

The Ethernet RJ-45 connectors are the standard network headers. The following table is the pin assignment.

PIN Signal

1 GND

2 +12V

3 SENSE

Pin Signal Pin Signal

1 TX+ 5 Not Used

2 TX- 6 RX-

3 RX+ 7 Not Used

4 Not Used 8 Not Used