Adaptec AHA-3940 Installation Guide

RInstallation GuideAHA-3940AUWDMultiChannel PCI-to-UltraSCSI Host Adapter with SCSISelect Utility

10and Advanced Configuration Options. Highlight an option and press Enter to see a list of possible values.Select SCSI Device Configuration to see a m

11Options, and set the Support Removable Disks Under BIOS as Fixed Disks option to All Disks.Caution: If you use this setting, you cannot remove media

12 Are all devices on the SCSI bus terminated properly? Does your system CMOS Setup require you to enable PCI bus parameters? If so, see your computer

13Federal Communications Commission Radio Frequency Interference StatementWARNING: Changes or modifications to this unit not expressly approved by the

14Adaptec, Inc.691 South Milpitas Blvd.Milpitas, CA 95035Copyright © 1997, Adaptec, Inc. All rights reserved. Adaptec, the Adaptec logo, AHA, and EZ-S

2Getting StartedThis Installation Guide tells you how to install and con-figure the AHA®-3940AUWD PCI-to-UltraSCSI host adapter. The host adapter has

31 68-pin connector, very high density (0.8 mm)2 See Termination in Multiple Computer Configurations on page 7.Location DescriptionJ1 Internal 68 pin

4Default SettingsAHA-3940AUWD host adapters operate correctly with their factory default settings in most computers with PCI slots. The following tabl

5Installing the Host AdapterInserting the Host Adapter in a PCI SlotWARNING: Turn OFF and disconnect the power to your computer and attached devices b

6Connecting SCSI DevicesCaution: AHA-3940AUWD host adapters support only single-ended SCSI devices. Do not connect differential SCSI devices, because

7Caution: Channel A has three SCSI connec-tors: J1, J5, and J8. Do not connect devices to all three connectors at one time. At most, only two of the t

8same SCSI bus accesses the disk drives and other SCSI devices on the bus.Setting SCSI IDsYou must assign a different SCSI ID to each device on each o

9Note: The PCI bus is supposed to automati-cally assign Interrupt channels (IRQs) and port addresses. But because PCI is currently combined with other