Intel D845PESV manual Hi-Speed USB 2.0 Support, Enhanced IDE Interface, RJ-45 LAN Connector LEDs

Intel Desktop Board D845PESV Product Guide

RJ-45 LAN Connector LEDs

Two LEDs are built into the RJ-45 LAN connector. Table 3 describes the LED states when the board is powered up and the LAN subsystem is operating.

Table 3. RJ-45 LAN Connector LEDs

LED Color

Green

Yellow

LED State

Off

On

Off

On (steady state)

On (brighter and pulsing)

Indicates

10 Mbit/sec data rate is selected.

100 Mbit/sec data rate is selected.

LAN link is not established.

LAN link is established.

The computer is communicating with another computer on the LAN.

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.

This Intel desktop board supports up to six USB 2.0 ports via ICH4; four ports routed to the back panel and two routed to a USB front panel header. 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 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.

✏NOTE

USB devices are limited to USB 1.1 transfer rates prior to operating system and driver initialization.

Enhanced IDE Interface

The ICH4’s 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 four IDE devices (such as hard drives)

•ATAPI devices (such as CD-ROM drives)

•Older PIO Mode devices

•Ultra DMA-33 and ATA-66/100 protocols

•Laser servo (LS-120) drives

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