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PowerDomain 3940UW
The Adaptec PowerDomain 3940UW UltraSCSI accelerator is the ideal I/O solution for high-speed data transfers between your Power Macintosh with PCI and SCSI peripherals. It moves data up to 80 MByte/sec on two SCSI channels and connects up to 30 peripherals, so your hottest applications never have to wait for I/O.
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DownloadsDocumentationTechnical Specifications

Note: Only drivers that are not included or embedded within a supported operating system are listed below. To see a complete list of supported operating systems see the Product Specifications

Select your operating system or software below

Bios Updates and Other Downloadable Files

Bios Updates and Other Downloads

Macintosh OS

Macintosh OS 8x and 9x

Hardware Installation
how to install your adaptec pci card (html 74 kb)
scsi and macintosh (html 69 kb)
mac os x (html 68 kb)
Product Documentation
User Guide for the Adaptec PowerDomain 2940UW/3940UW (PDF 1 MB)
Number of devices
Up to 30 single-ended SCSI peripherals

Bus System Interface Type

PCI expansion bus
External Connectors
Two 0.8 mm, 68-pinUltra Wide connectors
Internal Connectors
68-pin SCSI ribbon cables
Data Transfer Rate
Up to 40 Mbytes/sec/channel (80MB over two channels)
Package Contents
PowerDomain 3940UW UltraSCSI acceleratorPowerDomain Control softwarePowerDomain DiscBasicsTM softwareInternal 68-pin SCSI ribbon cables (2)External 0.8-mm, 68-pin cableComplete documentation
5 years

Supported Protocols

SCSI-3 (Ultra)

Types of Devices Supported

Hard disk,
removable disk,
tape, DAT,
Floptical® drives and scanners
Termination Active

Advanced Features

Support for scatter/gather, disconnect/reconnect, tagged command queuing
Independent negotiation of high-speed data transfers (Fast, Wide, Ultra) with each peripheral device
Support for 255 simultaneous active SCSI commands
On-board flash memory for easy driver upgrades
SCSI Manager 4.3 compliant
Bootable from attached disks

PCI Bus Data Transfer Rate

Up to 133 MByte/sec

Board Dimensions

5" x 7" (12.7 cm x 17.8 cm)

Power Consumption

+5.0 +/- 0.25V at 2.0A max

Operating Characteristics

32 F to 131 F(0 C to 55 C)
10% to 90%, non-condensing Relative Humidity

Storage Characteristics

-67 f to 185 F(-55 C to 85 C)