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Intel Desktop Board D975XBX2 Product Guide
18
Hi-Speed USB 2.0 Support
NOTE
Computer systems that have an unshielded cable attached to a USB port might not
meet FCC Class B requirements, even if no device or a low-speed USB device is
attached to the cable. Use a shielded cable that meets the requirements for a
full-speed USB device.
The desktop board supports up to eight USB 2.0 ports via ICH7; four ports routed to
the back panel and four routed to two internal USB 2.0 headers. USB 2.0 ports are
backward compatible with USB 1.1 devices. USB 1.1 devices will function normally at
USB 1.1 speeds.
USB 2.0 support requires both an operating system and drivers that fully support
USB 2.0 transfer rates. Disabling Hi-Speed USB in the BIOS reverts all USB 2.0 ports
to USB 1.1 operation. This may be required to accommodate operating systems that
do not support USB 2.0.
Enhanced IDE Interface
The ICH7 IDE interface handles the exchange of information between the processor
and peripheral devices like hard disks, CD-ROM drives, and Iomega Zip* drives inside
the computer. The interface supports:
• Up to two IDE devices (such as hard drives)
• ATAPI-style devices (such as CD-ROM drives)
• Older PIO Mode devices
• Ultra DMA-33 and ATA-66/100 protocols
Serial ATA
The desktop board supports eight Serial ATA channels, connecting one device per
channel in either a RAID or a non-RAID configuration.
Expandability
For system expansion, the desktop board supports the following:
• One PCI Express x16 card as an electrical x16 card or two PCI Express x16 cards
as electrical x8 cards
• One PCI Express x16 card as an electrical x4 card
• Two PCI bus add-in cards
Related Links
For information about installing a PCI Express x16 card, see page 38 in Chapter 2.