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Intel Desktop Board DH55HC Product Guide
16
High-Definition Multimedia Interface* (HDMI*)
The HDMI port supports standard, enhanced, or high-definition video, plus multi-
channel digital audio on a single cable. It is compatible with all ATSC and DVB HDTV
standards and supports 8-channel digital audio. The maximum supported resolution is
1920 x 1200 at 60 Hz refresh (WUXGA). The HDMI port is compliant with the
HDMI 1.3 specification.
The HDMI port is enabled for the POST whenever a monitor is attached, regardless of
the VGA and DVI connector status.
Digital Visual Interface (DVI-D)
The DVI-D port supports digital DVI displays. The maximum supported resolution is
1920 x 1200 at 60 Hz refresh (WUXGA). The DVI-D port is compliant with the DVI 1.0
specification.
The DVI-D port is only enabled for POST when there are no monitors attached to the
VGA or HDMI connectors.
PCI Express* x16 Graphics
The Intel Core i7, Intel Core i5, Intel Core i3, and Intel Pentium processors in an
LGA1156 socket support discrete add-in graphics cards via the PCI Express 2.0 x16
add-in card connector. The board supports the following PCI Express speeds:
• PCI Express GEN2 frequency of 2.5 GHz which results in 5.0 Gb/s in each direction
(500 MB/s) per lane. The maximum theoretical bandwidth on the interface is
8 GB/s in each direction, simultaneously, when operating in x16 mode.
• PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each direction
(250 MB/s) per lane. The maximum theoretical bandwidth on the interface is
4 GB/s in each direction, simultaneously, when operating in x16 mode.