
Desktop Board Features
19
Expandability
Intel Desktop Board DH55HC provides the following expansion capability:
•
One PCI Express 2.0 x16 port
•
Two PCI Express 2.0 x1 ports
•
Three PCI bus interfaces
Legacy I/O
The board’s Legacy I/O Controller provides the following legacy features:
•
One serial port header
•
One parallel port header with Extended Capabilities Port (ECP) and Enhanced
Parallel Port (EPP) support
•
Serial IRQ interface compatible with serialized IRQ support for PCI Conventional
bus systems
•
PS/2-style keyboard/mouse interface
•
Intelligent power management, including a programmable wake-up event interface
•
PCI Conventional bus power management support
The BIOS Setup program provides configuration options for the Legacy I/O controller.
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, and the
PCI Express and SATA auto-configuration utilities. The BIOS is stored in the Serial
Peripheral Interface (SPI) Flash device.
The BIOS can be updated by following the instructions in Chapter 3 starting on
page 63.
Serial ATA Auto Configuration
If you install a Serial ATA device (such as a hard drive) in your computer, the auto-
configuration utility in the BIOS automatically detects and configures the device for
your computer. You do not need to run the BIOS Setup program after installing a
Serial ATA device. You can override the auto-configuration options by specifying
manual configuration in the BIOS Setup program.
PCI*/PCI Express Auto Configuration
If you install a PCI or PCI Express add-in card in your computer, the PCI/PCI Express
auto-configuration utility in the BIOS automatically detects and configures the
resources (IRQs, DMA channels, and I/O space) for that add-in card. You do not need
to run the BIOS Setup program after you install a PCI or PCI Express add-in card.
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