3
ASRock A75 Pro4 Motherboard
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I/O Panel
** There are two LED next to the LAN port. Please refer to the table below for the LAN port LED
indications.
LAN Port LED Indications
Activity/Link LED SPEED LED
Status Description Status Description
Off No Link Off 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection
1 PS/2 Mouse/Keyboard Port (Green/Purple) 10 Microphone (Pink)
2 D-Sub Port 11 USB 3.0 Ports (USB01)
* 3 USB 2.0 Ports (USB23) 12 IEEE 1394 Port (IEEE 1394)
** 4 LAN RJ-45 Port **** 13 eSATA3 Connector
5 Central / Bass (Orange) 14 Clear CMOS Switch (CLRCBTN)
6 Rear Speaker (Black) 15 HDMI Port
7 Optical SPDIF Out Port 16 DVI-D Port
8 Line In (Light Blue) 17 USB 3.0 Ports (USB45)
*** 9 Front Speaker (Lime)
LAN Port
ACT/LINK
LED
SPEED
LED
1
2
4
3
5
6
7
8
9
10
11
12
13
14
15
16
17
***
If you use 2-channel speaker, please connect the speaker’s plug into “Front Speaker Jack”.
See the table below for connection details in accordance with the type of speaker you use.
TABLE for Audio Output Connection
Audio Output Channels Front Speaker Rear Speaker Central / Bass Line In or
(No. 9) (No. 6) (No. 5) Side Speaker
(No. 8)
2 V -- -- --
4 V V -- --
6 V V V --
8 V V V V
* It is recommended to install the USB Keyboard/Mouse cable to USB 2.0 ports (USB23)
instead of USB 3.0 ports.
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