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1 Baseboard Description
Baseboard Features
Table 1. Baseboard Features
Feature Description
Processor Installed: Up to four Intel
®
Pentium
®
III Xeon
™
processors, packaged in single
edge contact (S.E.C.) cartridges and installed in 330-pin SC330.1 compliant
edge connectors, operating at 1.8 V to 3.5 V. The baseboard’s voltage regulator
is automatically programmed by the processor’s VID pins to provide the required
voltage. The baseboard includes connectors for three 8.3-compliant plug-in
voltage-regulator modules (VRM).
Memory, dynamic
random access (DRAM)
Single plug-in module containing 64/72-bit four-way-interleaved pathway to main
memory supporting SDRAM.
Installed: 256 MB to 16 GB of error correcting code (ECC) memory. A minimum
of four DIMMs must be installed.
Video memory (DRAM) Installed: 2 MB of video memory.
PCI Segment A bus
PCI Segment B bus
PCI Segment C bus
PCI-A—Two full length connectors and one embedded device:
• Two 184-pin, 3.3 V keyed, 64-bit PCI expansion connectors (66/33 MHz).
• One DesotoE2 Hot-Plug PCI controller.
PCI-B—Four full length connectors and two embedded devices:
• One Adaptec
†
AIC-7899 dual channel SCSI-3 Ultra 160/m SCSI controller.
• Four 184-pin, 5 V keyed, 64-bit PCI expansion connectors (33 MHz).
• One DesotoE2 Hot-Plug PCI controller.
PCI-C—Two half length connectors and several embedded devices:
• Two 120-pin, 32-bit PCI expansion connectors (33 MHz).
• OSB4 I/O APIC.
• PCI network interface controller.
• ATI Rage
†
IIc video controller.
• PCI narrow/wide Adaptec AIC-7880 Ultra SCSI controller.
PCI Bus Master IDE
Interface
The baseboard supports Ultra DMA33 Synchronous Direct Memory Access
(DMA) mode transfers.
USB Interface The baseboard provides a dual external USB connector and one internally
accessible header.
Server Management Thermal/voltage monitoring and error handling.
Front panel controls and indicators (LEDs).
Graphics ATI Rage IIc VGA Graphics Accelerator, along with video SGRAM and support
circuitry for an embedded SVGA video subsystem.
SCSI Two embedded SCSI controllers:
Adaptec AIC-7899 SCSI Controller—Dual Channel Wide Ultra/Ultra II/Ultra
160/M SCSI controller.
Adaptec AIC-7880 SCSI Controller—PCI narrow/wide Ultra SCSI controller.
System I/O PS/2
†
-compatible keyboard and mouse ports, 6-pin DIN.
Advanced parallel port, supporting Enhanced Parallel Port (EPP) levels 1.7 and
1.9, ECP, compatible 25-pin.
VGA video port, 15-pin.
Two serial ports, 9-pin (serial port A is the top connector).
Form Factor Form-factor, 16 × 13 inches, ATX-style backpanel I/O.