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The Leaders in SCSI Technology

Adaptec produce an extensive range of S.C.S.I. host adapters for the P.C. environment. All major bus types can be accommodated, as well as all recognised S.C.S.I. standards.Adaptec AHA2940 SCSI Adapter

Two basic approaches to data transfer are taken when dealing with S.C.S.I. devices on a PC, Programmed I/O (PIO) or Bus Master.

Programmed I/O is the cheaper and simpler solution. The PIO approach is very similar to the method used for data transfer with I.D.E. (ATA) Hard Disk Drives. The penalty is reduced processor performance, since all data I/O to a S.C.S.I. device requires the direct attention of the processor. PIO is usually quite satisfactory on single user machines.

Bus Master handles data transfers from S.C.S.I. devices using D.M.A., (Direct Memory Access) freeing the processor from this task. Bus Master produces a substantial improvement in system performance, and is recommended in data intensive systems, such as file servers.
To ease installation and operation, Adaptec also market a range of S.C.S.I. support software for the P.C. Adaptec EZ-SCSI is a high performance, easy to use support package for the entire range of Adaptec Host Adapters.

Price Guide - Adaptec S.C.S.I. Products
CodeItem DescriptionRetail Price Warranty
AHA1505VARK16 bit ISA SCSI-II PIO Host Adapter Kit, includes EZ-SCSI Lite Software and internal S.C.S.I. ribbon cable, Non - Bootable for CD ROM only$122.001 Year
AHA1520B16 bit ISA PnP SCSI-II PIO Host Adapter (NO Floppy Drive Support)$142.001 Year
AHA1520BK16 bit ISA PnP SCSI-II PIO Host Adapter (NO Floppy Drive Support) Kit, includes EZ-SCSI Software and internal S.C.S.I. ribbon cable$280.001 Year
AHA1542CP16 bit ISA PnP SCSI-II Bus Master Host Adapter$437.001 Year
AHA1542CPK16 bit ISA PnP SCSI-II Bus Master Host Adapter Kit, includes EZ-SCSI Software and internal S.C.S.I. ribbon cable$553.001 Year
AHA2742AT32 bit EISA SCSI-II Bus Master Host Adapter Twin channel supports 14 devices (and 2 x FDD)$594.001 Year
AHA2742ATK32 bit EISA SCSI-II Bus Master Host Adapter Kit, includes EZ-SCSI Software and internal S.C.S.I. ribbon cable. Twin channel supports 14 devices (and 2 x FDD)$671.001 Year
AHA2920CK32 bit PCI PnP SCSI-II PIO Host Adapter Kit, includes EZ-SCSI Software$313.001 Year
AHA2940A32 bit PCI SCSI-II Bus Master Host Adapter$428.001 Year
AHA2940U32 bit PCI ULTRA FAST SCSI-3 Bus Master Host Adapter$454.001 Year
AHA2940UK32 bit PCI ULTRA FAST SCSI-3 Bus Master Adapter Kit, includes EZ-SCSI Software and internal ribbon cable$555.001 Year
AHA2940UW32 bit PCI ULTRA FAST WIDE SCSI-3 Bus Master Adapter$555.001 Year
AHA2940UWK32 bit PCI ULTRA FAST WIDE SCSI-3 Bus Master Adapter Kit, includes EZ-SCSI Software and internal ribbon cable$642.001 Year
AHA3940AUK32 bit PCI DUAL CHANNEL ULTRA FAST SCSI-3 Bus Master Adapter Kit, includes EZ-SCSI Software and internal ribbon cable $897.001 Year
APA358KStandard and Enhanced Parallel Port to SCSI-II Adapter Kit, includes SCSIworks software and cable$262.001 Year
APA1450BPCMCIA (Type II) to SCSI Adapter, includes cable and Win '95 support software$223.001 Year
APA1460BPCMCIA (Type II) to SCSI Adapter, includes EZ-SCSI software and cable$363.001 Year
ASWEZSCSIV4EZ-SCSI V4.0 Software (for Windows 3.11 / Workgroups 3.11 / Windows 95 / Windows NT / DOS)$121.0090 days

Adaptec products are also available for SCSI-Differential, Apple Macintosh-PCI and RAID. Please contact ZCM Services for detailed information and pricing.

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Copyright ©1997 ZCM Services, Australia. Last updated on October 9, 1998.