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1.6
Intel
The Intel X38 chipset consists of the following devices:
•
Intel 82X38 Memory Controller Hub (MCH) with Direct Media Interface (DMI)
interconnect
•
Intel 82801IR I/O Controller Hub (ICH9R)
The MCH component provides interfaces to the processor, memory, and PCI Express.
The ICH9R is a centralized controller for the board's I/O paths.
For information about
The Intel X38 chipset
Resources used by the chipset
1.6.1
USB
The board supports up to twelve USB 2.0 ports, supports UHCI and EHCI, and uses
UHCI- and EHCI-compatible drivers.
The ICH9R provides the USB controller for all ports. The port arrangement is as
follows:
•
Eight ports are implemented with dual stacked back panel connectors adjacent to
the audio connectors
•
Four ports are routed to two separate front panel USB headers
For information about
The location of the USB connectors on the back panel
The location of the front panel USB headers
X38 Chipset
Refer to
http://www.intel.com/products/desktop/chipsets/index.htm
Chapter 2
Product Description
Refer to
Figure 10, page 44
Figure 11, page 45
19
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