1 Baseboard Description

Baseboard Features

Table 1. Baseboard Features

Feature

Processor

Memory, dynamic random access (DRAM)

Video memory (DRAM)

PCI Segment A bus PCI Segment B bus PCI Segment C bus

PCI Bus Master IDE Interface

USB Interface

Server Management

Graphics

SCSI

System I/O

Form Factor

Description

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).

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.

Installed: 2 MB of video memory.

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.

The baseboard supports Ultra DMA33 Synchronous Direct Memory Access (DMA) mode transfers.

The baseboard provides a dual external USB connector and one internally accessible header.

Thermal/voltage monitoring and error handling.

Front panel controls and indicators (LEDs).

ATI Rage IIc VGA Graphics Accelerator, along with video SGRAM and support circuitry for an embedded SVGA video subsystem.

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.

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, 16 × 13 inches, ATX-style backpanel I/O.

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