Specifications
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Specifications
Chipset Intel® 440BX PCIset
  • 82443BX PMC (492 mBGA)
  • 82371EB PIIX4e (324 mBGA)
Memory Support
  • 100-megahertz (MHz) Memory Bus Speed (FSB)
  • Three 64-bit or 72-bit Error Checking and Correction (ECC) 4-clock, 3.3V, unbuffered synchronous DRAM (SDRAM) Single or double-sided DIMMs in the following sizes: 8 MB, 16 MB, 32 MB, 64 MB, 128 MB
  • Expandable to 384 megabytes (MB) of SDRAM, CAS latency of 2, using 64-Mbit chips
  • DIMMs must adhere to the Intel 4-clock 100-MHz 64-bit unbuffered SDRAM DIMM specification, latest revision
  • Uses gold-plated DIMM socket
  • ECC signal and multiple bit detection, single bit correction, supported, using ECC DIMMs, can be enabled and disable in the BIOS Setup Utility
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    Hard Drive Interface
  • Internal to core logic (PIIX4)
  • Supports up to four Integrated Device Electronics (IDE) devices
  • Uses two shrouded IDE connectors
  • Dual independent channel support for Fast Integrated Device Electronics (IDE), programmed I/O (PIO) mode 3, mode 4, and ATA Packet Interface (ATAPI) compatible CD-ROM drives
  • Support for direct memory access (DMA) modes 1, 2, bus mastering, and Ultra-DMA33 on both channels Bus Mastering supported on both channels
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    I/O
  • SMC FDC37C707 Ultra input/output (I/O) with BIOS code base to match BIOS, which supports two serial and one parallel port, single floppy disk drive, keyboard, mouse, real-time clock (RTC), and infrared (IR)
  • I/O connectors to include:
    • Stacked PS/2 style mouse, on top, and keyboard, at the bottom
    • Stacked DB25 connector for parallel port and two DB9 serial ports
    • USB Interface
  • USB controller integrated into PIIX4
  • Two USB ports, one rear panel stacked connector, another USB header on board. A jumper must be used to enable or disable this header. When enabled, the lower stacked USB connector will be disabled.
  • Stacked USB connectors
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    Battery Socketed Lithium coin cell 3V (~5 year life) and external battery connector
    Audio
  • Ensoniq 1373 based
  • Split analog/digital architecture for improved signal to noise (S/N) ratio: greater than or equal to 80 decibels (dB) - measured at line out, from any analog input, including line-in, CD-ROM, auxiliary line-in, and video, stereo audio from a video source
  • AC '97 Audio with PCI bus interface
  • AC analog Coder-decoder (CODEC) which interfaces with digital controller via a five-wire digital interface
  • 18-bit stereo full-duplex CODEC with a fixed 48 kilobytes (KB) sampling rate
  • Destination Style Header for back panel connection
  • Stacked D-sub/3.5mm phono jacks for game port, line-in, line-out, and mic-in
  • 4-pin PH ATA Packet Interface (ATAPI) connector for CD-ROM
  • 4-pin PH ATAPI connector for mono-in/mono-out for modem speakerphone (TAD)
  • 4-pin PH ATAPI connector for TV tuner in
  • Auto detect speaker type, analog/digital
  • Support user disable feature in the BIOS Setup Utility
  • Ensoniq ES1373 digital controller
  • Crystal CS4297 analog CODEC
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    Speaker
  • On board piezo speaker
  • Speaker header for off board speaker, part of front panel header
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    BIOS
  • Intel/Phoenix code base
  • 4-Mbit flash support (TSOP)
    • Pentium II processor detection and initialization
    • Memory auto-configure and ECC support
    • AGP set initialization module
    • Autodetect keyboard, mouse, floppy, IDE, serial, and parallel devices
    • CD-ROM boot
    • Password secured boot
    • User and administrator mode for BIOS Setup Utility screens with two separate password protected accesses
    • Supports non-volatile storage in BIOS flash
    • PCI Configuration space and Desktop Management Interface (DMI) support
    • USB support with support for Legacy input devices
    • Audio disable support in the BIOS Setup Utility
    • Supports bootable LS-120
    • Ultra DMA/33 support
    • ATAPI support for IDE CD-ROM and tape drives
    • Int 13h extensions to support drives larger than 2 gigabytes (GB)
    • AC power loss state retention management
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    Power Management
  • Motherboard and BIOS must support the On-now Initiative, Soft power off
  • Motherboard must allow BIOS control, on/off, of Power Supply fan
  • Motherboard must allow BIOS control, on/off, of Processor Fan sink
  • Motherboard must allow BIOS control of Dual Mode light-emitting diode (LED), Full-On/Suspend
  • Legacy Advanced Power Management (APM) 1.2 Power Management support of onboard peripheral devices
  • Power-On Switch must support Soft-Off. Touching for one second or less puts the computer in Suspend mode. Touching and holding for four seconds puts the computer in the Full-Off state, where Full-Off has all power removed except Power Supply 5V Standby.
  • Support for Wake On LAN (WOL)
  • Energy Star Compliant
  • SMM, Video Electronics Standards Association (VESA) monitor specifications
  • Power down of ATAPI green enabled devices
  • Standard 20-pin power header provides standby current used to maintain complementary metal-oxide semiconductor (CMOS) real time clock
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    PCI/AGP/ISA slots Six total slots:
    • Four PCI, one 1x-AGP, one shared PCI/ISA
    • All PCI slots are masters, revision 2.1
    • All slots support full length cards
    Manufacturing Technology
  • Surface mount technology, single sided assembly
  • Four layer printed circuit board (PCB)
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    Form Factor
  • ATX form factor, 12.9 inches × 9.6 inches, - has existing BAT/AT plus three new holes, 10 holes total
  • ATX 2 × 10 power supply connector - includes 3.3V and PS-ON
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    Front Panel
  • 2 × 8 front panel header:
    • Supporting Soft-off power switch
    • Sleep switch
    • Infared (IR) interface
    • Hard disk (HD) light-emitting diode (LED)
    • Dual Mode, two color: green and yellow, Power LED, also called Sleep LED
    • Reset Switch
    • Speaker
  • Multiple 3-pin auxiliary fan connectors
  • Stuffable Custom, 1 × 26, header to match current configurations
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    Back Panel Custom stacked USB/RJ-45 connector for integrated network interface card (NIC)
    Power Supplies Can be assembled with the following power supplies:
    • 200 Watt New Look with ~720mA PS standby current
    • Must have standard ATX 20-pin power connector
    • Soft-off support