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Installing the Motherboard

Please make sure that the USB cable has the same pin assignment as indi-

cated above. A different pin assignment may cause damage or system hang-

up.

F_USB1~3: Front Panel USB headers

The motherboard has six USB ports installed on the rear edge I/O port array. Addi-

tionally, some computer cases have USB ports at the front of the case. If you have

this kind of case, use auxiliary USB connector to connect the front-mounted ports to

the motherboard.

1 USBPWR Front Panel USB Power

2 USBPWR Front Panel USB Power

3 USB_FP_P0- USB Port 0 Negative Signal

4 USB_FP_P1- USB Port 1 Negative Signal

5 USB_FP_P0+ USB Port 0 Positive Signal

6 USB_FP_P1+ USB Port 1 Positive Signal

7 GND Ground

8 GND Ground

9 Key No pin

10 USB_FP_OC0 Overcurrent signal

Function

Pin Signal Name

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ECS A785GM-AD3 Specifications

General

Number of memory slots	4
Maximum internal memory	8 GB
Processor socket	Socket AM3
Processor manufacturer	AMD
USB 2.0 connectors	8
Power fan connector	Yes
Number of SATA connectors	5
PS/2 ports quantity	2
USB 2.0 ports quantity	6
Ethernet LAN (RJ-45) ports	1
Firewire (IEEE 1394) ports	-
Audio chip	Realtek ALC888S
Certification	ROHS, EuP
Motherboard chipset	AMD 785G
Audio output channels	7.1 channels
Motherboard form factor	ATX
Compatible operating systems	Windows Vista, 7
PCI slots	3
Maximum graphics card memory	512 MB
RAID levels	0, 1
LAN controller	Realtek RTL8111DL
Networking features	Gigabit Ethernet
BIOS type	AMI
BIOS memory size	64 Mbit