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1. Introduction
21
The ZT 5504's USB channels are controlled by the Intel 82371EB (PIIX4E) device. The "
Intel
440GX AGPset
" topic in Appendix E provides a link to the datasheet for this device.
Baseboard Management Controller
The ZT 5504 includes an Intel Baseboard Management Controller (BMC) chip. The BMC
provides SMBus (System Management Bus) interfaces and is IPMI (Intelligent Platform
Management Interface) compliant. The BMC subsystem monitors, controls, and performs
remote diagnostics for on- and off-board functions.
IDE Controller
The ZT 5504 features an ATA-33 IDE controller that supports onboard external IDE drives.
ATA-33, also called Ultra-DMA and DMA-33, is an enhancement to earlier IDE standards that
increases throughput to 33 MBps.
Primary channel IDE signals are available through the
J14 IDE connector
. Secondary channel
IDE signals are available through the
J5 Rear Panel I/O connector
. See Chapter 6, "
IDE
Controller
," for more information on the ZT 5504's IDE controller.
The ZT 5504's IDE controller resides in the Intel 82371EB (PIIX4E) device. The "
Intel 440GX
AGPset
" topic in Appendix E provides a link to the datasheet for this device.
Floppy Disk Controller
The ZT 5504 includes a 2.88 MB Super I/O Floppy Disk Controller that supports an optional
external floppy drive. Floppy signals are available through the
J5 Rear Panel I/O connector
.
The "
SuperI/O
" topic in Appendix E provides a link to the datasheet for ZT 5504's I/O controller.
Keyboard and Mouse Controller
The ZT 5504 includes an on-board PC/AT keyboard controller. The ZT 5504 also includes an
on-board PS/2-style mouse controller. Keyboard and mouse signals are available through the
J5 Rear Panel I/O connector
.
The "
SuperI/O
" topic in Appendix E provides a link to the datasheet for ZT 5504's I/O controller.
LED Indicators
The LEDs located at the ZT 5504's
faceplate
are defined below.
•
Ethernet (in the ENETA and ENETB RJ 45 connectors):
Green = network connection
Yellow = network activity
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