Micronics Helios Dual Pentium II, Manual, Page: 68 / 90

Helios System Board Manual
Appendix A: Technical Information
Keyboard/Mouse: PS/2 style keyboard and mouse
Memory Capacity: Four 3.3V unbuffered 64/72-bit DIMM sockets
(PC100 100MHz SDRAM memory supported).
Maximum memory - 1GB SDRAM
ECC supported via chipset when using 62/72-bit
DIMMs.
Onboard Sound: ESS Maestro-2 PCI audio
(optional) Sound Blaster

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)
Sound drivers
Hardware LM79 Microprocessor System Hardware Monitor
Management: (optional).
Two LM75 CPU Temperature Sensors
CPU Fan Speed Monitoring (3-pin header)
Chassis Intrusion (2-pin header)
Chassis Fan Speed Monitoring (3-pin header)
I/O Ports: Two high speed serial ports (16550 compatible)
One 25-pin Parallel Port (ECP and EPP)
Two USB ports
Floppy Port: Supports 360K - 2.88MB formats
Auto detection of add-in floppy controllers
PCI IDE Ports: Ultra DMA/33 IDE
Two 40-pin IDE connectors
(Primary and Secondary IDE).
Multiple sector transfer support
Auto detection of add-in IDE board
Supports all ATAPI device
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