Asus Motherboard M3A78-EM User Manual page 40

14.. USB.2.0.ports.1.and.2. These two 4-pin Universal Serial Bus (USB) ports
are available for connecting USB 2.0 devices.
15.. External.SATA.port. This port connects to an external Serial ATA hard disk
drive.
DO NOT insert different connectors to the external SATA port.
To use hot-plug, set the OnChip SATA.Type in the BIOS settings to [AHCI].
See section 2.3.6 SATA Configuration for details.
16.. DVI-D.Out.port. This port is for any DVI-D compatible device and is HDCP
compliant allowing playback of HD DVD, Blu-Ray and other protected
content.
17.. DisplayPort. This port connects a display monitor or a home-theater system.
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18.. 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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Due to chipset limitation, DisplayPort on this motherboard only supports
video signals.
Due to chipset limitation, when a DisplayPort monitor is plugged in, PCIE
x16 slot will not be able to support an add-on card. Set the DisplayPort.
Configuration item in the BIOS to [Enabled] to use the DisplayPort. See
page 2-26 for details.
Chapter 1: Product introduction