Gigabyte GA-H55-UD3H, User Manual, Page: 20 / 96

Hardware Installation - 20 -
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 perform
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 con-
figuration in Chapter 5, "Configuring 2/4/5.1/7.1-Channel Audio."
Activity LED:
State Description
Blinking Data transmission or receiving is occurring
Off
No data transmission or receiving is occurring
Connection/Speed LED:
State Description
Orange 1 Gbps data rate
Green 100 Mbps data rate
Off 10 Mbps data rate
Activity LED
Connection/
Speed LED
LAN Port
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.
(Note 1) To use the onboard D-Sub, DVI-D and HDMI ports, you must install an Intel CPU with integrated
graphics.
(Note 2) The DVI-D port does not support D-Sub connection by adapter.
(Note 3) You can use only one of the onboard digital graphics ports (HDMI and DVI-D) for output when in the
BIOS Setup program or when during the POST screens.
• 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.