Datasheet

Intel Desktop Board D945GSEJT Technical Product Specification

1.5.2 USB

The board supports up to seven USB 2.0 ports, supports UHCI and EHCI, and uses

UHCI- and EHCI-compatible drivers.

ICH7-M provides the USB controllers for all USB ports. The port arrangement is as

follows:

• Three ports are implemented through a single vertical and a dual-port horizontal

connector on the back panel

• Four ports are routed to two separate front panel USB headers

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NOTE

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 2-2, page 37

The location of the front panel USB headers Figure 2-4, page 39

1.5.3 ATA Support

The board provides three ATA interface connectors:

• One PATA connector that supports two devices

• Two SATA connectors that support one device per connector

1.5.3.1 PATA Interface

The ICH7-M’s PATA controller has one bus-mastering PATA interface that is accessible

through a 44-pin connector that is compatible with 2.5 or 3.5 inch PATA hard drives

(including 2.5 inch hard drive power support). The PATA interface supports the

following modes:

• Programmed I/O (PIO): processor controls data transfer.

• 8237-style DMA: DMA offloads the processor, supporting transfer rates of up to

16 MB/sec.

• Ultra DMA: DMA protocol on ATA bus supporting host and target throttling and

transfer rates of up to 33 MB/sec.

• ATA-66: DMA protocol on ATA bus supporting host and target throttling and

transfer rates of up to 66 MB/sec. ATA-66 protocol is similar to Ultra DMA and is

device driver compatible.

• ATA-100: DMA protocol on ATA bus allows host and target throttling. The

ICH7-M’s ATA-100 logic can achieve read transfer rates up to 100 MB/sec and write

transfer rates up to 88 MB/sec.