Intel DP55WB Product Specification - Page 18

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Intel Desktop Board DP55WB Technical Product Specification 1.6 Intel® P55 Express Chipset Intel P55 Express Chipset with Direct Media Interface (DMI) interconnect provides interfaces to the processor and the USB, SATA, LPC, LAN, PCI, PCIe interfaces. The Intel P55 Express Chipset is a centralized controller for the board's I/O paths. For information about The Intel P55 chipset Resources used by the chipset Refer to http://www.intel.com/products/desktop/chipsets/index.htm Chapter 2 1.6.1 USB The board supports up to 14 USB 2.0 ports, via two Enhanced Host Controller Interface (EHCI) host controllers that support USB high-speed signaling. High-speed USB 2.0 allows data transfers up to 480 Mb/s which is 40 times faster than full-speed USB. The Intel P55 Express Chipset provides the USB controller for all ports. The port arrangement is as follows: • Eight ports are implemented with stacked back panel connectors • Six front panel ports implemented through three internal headers All 14 USB ports are high-speed, full-speed, and low-speed capable. NOTES One of the front panel USB headers supports an Intel Z-U130 USB Solid-State Drive (or compatible device). Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices. For information about The location of the USB connectors on the back panel The location of the front panel USB headers Refer to Figure 9, page 38 Figure 10, page 39 18

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Intel Desktop Board DP55WB Technical Product Specification
18
1.6
Intel
®
P55 Express Chipset
Intel P55 Express Chipset with Direct Media Interface (DMI) interconnect provides
interfaces to the processor and the USB, SATA, LPC, LAN, PCI, PCIe interfaces.
The
Intel P55 Express Chipset is a centralized controller for the board’s I/O paths.
For information about
Refer to
The Intel P55 chipset
Resources used by the chipset
Chapter 2
1.6.1
USB
The board supports up to 14 USB 2.0 ports, via two Enhanced Host Controller
Interface (EHCI) host controllers that support USB high-speed signaling. High-speed
USB 2.0 allows data transfers up to 480 Mb/s which is 40 times faster than full-speed
USB.
The Intel P55 Express Chipset provides the USB controller for all ports.
The port
arrangement is as follows:
Eight ports are implemented with stacked back panel connectors
Six front panel ports implemented through three internal headers
All 14 USB ports are high-speed, full-speed, and low-speed capable.
NOTES
One of the front panel USB headers supports an Intel Z-U130 USB Solid-State Drive
(or compatible device).
Computer systems that have an unshielded cable attached to a USB port may not
meet FCC Class B requirements, even if no device is attached to the cable.
Use
shielded cable that meets the requirements for full-speed devices.
For information about
Refer to
The location of the USB connectors on the back panel
Figure 9, page 38
The location of the front panel USB headers
Figure 10, page 39