Asus M4A78 - Manual (Page 32)

11. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
12. External SATA port. This port connects to an external Serial ATA hard disk drive.
13. Optical S/PDIF Out port. This port connects an external audio output device via a
optical S/PDIF cable.
Audio 2, 4, 6, or 8-channel configuration
Port Headset
2-channel
4-channel 6-channel 8-channel
Light Blue Line In Line In Line In Line In
Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out
Pink Mic In Mic In Mic In Mic In
Orange – – Center/Subwoofer Center/Subwoofer
Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out
Gray – – – Side Speaker Out
Refer to the audio configuration table below for the function of the audio ports in 2, 4, 6 or
8-channel configuration.
Ensure the audio device of sound playback is Realtek High Definition Audio (the name
may be different based on the OS). Go to Start > Control Panel > Sounds and Audio
Devices > Sound Playback to configure the setting.
DO NOT insert different connectors to the external SATA port.
14. Serial port. This 9-pin COM1 port is for pointing devices or other serial devices.
15. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
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