Helios System Board
D U A L P E N T I U M  I I P R O C E S S O R P C I L O C A L B U S S E R I E S
l Designed for the ATX Form Factor
l Dual Pentium  II processor support up to 400MHz
l Supports 66MHz and 100MHz bus speeds
l Based on Intel 440BX AGPset
R
shield compatible)
Floppy:
  Supports 360K to 2.88MB formats
  Auto detection of add-in floppy
controllers
Onboard Sound (Manufacturing Option):
  ESS Maestro-2 PCI audio
  SoundBlaster  and SoundBlaster Pro 
compatible 16-bit stereo
  Line In, Line Out, MIC and Game/MIDI
ports
  4-pin CD-ROM audio header (ATAPI)
  4-pin CD-ROM modem/Telephony header
(ATAPI)
  4-pin Line In header (ATAPI)
  4-pin Aux 2 (ATAPI)
  4-pin Video Sound In header (ATAPI)
  Windows 95 and Windows NT drivers
BIOS:
  Phoenix 4.06 BIOS on 2Mb Flash
  PCI auto configuration
  APM 1.2
  Auto detection of memory size
  Auto detection and display of EDO and
SDRAM memory
  Auto detection of IDE hard disk types
  Soft Power Down
  Quick Boot
  Multi-boot II
  DMI 2.0/SMI/ACPI
  WFM 1.0
Quality Commitment:
The continuously evolving technology
of the computer industry demands the
highest level of quality, reliability and
compatibility.
The Helios is extensively tested for compatibility
under various operating systems,
including: OS/2  Warp, NOVELL, SCO,
UNIX,  ODT, Windows 95  & NT,
MS-DOS  versions 5.0, 6.2 and PC-DOS.
Helios System Board
Specifications:
Processors:
  Dual Intel Slot 1
  Intel Pentium  II -233/266/300/333MHz
(66MHz FSB)
  Intel Pentium  II -350/400MHz (100MHz
FSB)
  Integrated VRM
Expansion:
  One AGP slot
  Four 32-bit PCI slots
  One PCI/ISA slot
CPU Clock Select:
  Support for 66 and100MHz CPU bus speed
configurations
Chipset:
  Intel 440BX AGPset
  Intel PIIX 4e
  National PC87309 Enhanced Super I/O
chip
Memory
  Four 3.3V unbuffered 64/72-bit DIMM
sockets
  Maximum memory: 1 GB for EDO/SDRAM
  ECC supported via chipset when using
72-bit DIMMs
PCI (Local Bus) IDE:
  Ultra DMA/33 IDE
  Two 40-pin IDE connectors (Primary and
Secondary IDE)
  Auto detection of add-in IDE board
  Multiple sector transfer support
  Supports all ATAPI devices
Communication Ports:
  Two high speed 16550 compatible serial
ports
  One 25-pin parallel port (ECP, EPP)
  Two USB ports
System Management (Manufacturing
Option):
  Microprocessor System Hardware Monitor
(National LM79)
  Two CPU Temperature Sensors
  CPU Fan Speed Monitoring (3-pin header)
  Chassis Intrusion (2-pin header)
  Chassis Fan Speed Monitoring (3-pin
header)
  Intel LANDesk Client Manager (Optional)
Keyboard and Mouse:
  PS/2 Keyboard and Mouse connectors
Form factor:
  ATX Form Factor
  Six Layer Board
  20-pin ATX power connector
  Stacked I/O connectors (Intel Venus I/O
P E N T I U M I I P R O C E S S O R P C I L O C A L B U S S E R I E S
World Headquarters:
Micronics Computers, Inc.
45365 Northport Loop West
Fremont, CA 94538-6417
Telephone (510) 651-2300
Telefax (510) 651-5612
www.micronics.com
Specifications are subject to change without notice.
Micronics and the Micronics logo, seal and names are
trademarks of Micronics Computers, Inc. All other
trademarks are the property of their respective owners.
  1998 Micronics Computers, Inc. Printed in U.S.A.
WP 4/98-4K
Printed on Recycled
Paper with Soy Inks.
Micronics/Orchid (Europe)
Unit 3/4 Woodlands Business Village
Coronation Road, Basingstoke
Hampshire, RG21 4JX
United Kingdom
Micronics Computers, Inc.
(Taiwan)
6F, No. 8, Lane 235
Pao Chiao Road
Hsintien City, Taipei County
Taiwan

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