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Optical S/PDIF Out Connector
This connector provides digital audio out to an external audio system that supports digital optical audio.
Before using this feature, ensure that your audio system provides an optical digital audio in connector.
RJ-45 LAN Port
The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following de-
scribes the states of the LAN port LEDs.
Blinking Data transmission or receiving is occurring
No data transmission or receiving is occurring
1 Gbps data rate
100 Mbps data rate
10 Mbps data rate
Center/Subwoofer Speaker Out Jack (Orange)
Use this audio jack to connect center/subwoofer speakers in a 5.1/7.1-channel audio configuration.
Rear Speaker Out Jack (Black)
Use this audio jack to connect rear speakers in a 4/5.1/7.1-channel audio configuration.
Side Speaker Out Jack (Gray)
Use this audio jack to connect side speakers in a 7.1-channel audio configuration.
Line In Jack (Blue)
The default line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.
Line Out Jack (Green)
The default line out jack. Use this audio jack for a headphone or 2-channel speaker. This jack can be
used to connect front speakers in a 4/5.1/7.1-channel audio configuration.
Mic In Jack (Pink)
The default Mic in jack. Microphones must be connected to this jack.
In addition to the default speakers settings, the ~
audio jacks can be reconfigured to per-
form different functions via the audio software. Only microphones still MUST be connected to
the default Mic in jack ( ). Refer to the instructions on setting up a 2/4/5.1/7.1-channel audio
configuration in Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
• When removing the cable connected to a back panel connector, first remove the cable from
your device and then remove it from the motherboard.
• When removing the cable, pull it straight out from the connector. Do not rock it side to side to
prevent an electrical short inside the cable connector.
Dual Display Configurations for the Onboard Graphics:
The table below shows the supported/unsupported dual display configurations for the onboard graphics
ports in different environments.
DVI-D + D-Sub
DVI-D + HDMI
HDMI + D-Sub
- Box Contents
- Optional Items
- GA-H55M-D2H/GA-H55M-S2H Motherboard Layout
- GA-H55M-D2H/GA-H55M-S2H Motherboard Block Diagram
- Chapter 1 Hardware Installation
- 1-1 Installation Precautions
- 1-2 Product Specifications
- 1-3 Installing the CPU and CPU Cooler
- 1-4 Installing the Memory
- 1-5 Installing an Expansion Card
- 1-6 Back Panel Connectors
- 1-7 Internal Connectors
- Chapter 2 BIOS Setup
- 2-1 Startup Screen
- 2-2 The Main Menu
- 2-3 MB Intelligent Tweaker(M.I.T.)
- 2-4 Standard CMOS Features
- 2-5 Advanced BIOS Features
- 2-6 Integrated Peripherals
- 2-7 Power Management Setup
- 2-8 PC Health Status
- 2-9 Load Fail-Safe Defaults
- 2-10 Load Optimized Defaults
- 2-11 Set Supervisor/User Password
- 2-12 Save & Exit Setup
- 2-13 Exit Without Saving
- Chapter 3 Drivers Installation
- Chapter 4 Unique Features
- Chapter 5 Appendix