Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0) Driver Download
The AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI(NT 4.0) is a disk drive controller manufactured by Adaptec. This driver fixes problems with drive not found, slow or unreliable data transfer, intermittent connection or hardware conflicts. This version of "303s9a04.exe" is rated (5 out of 5 stars) based on 14,518 downloads and 66 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 374.9 KB.
Supported Models
AIC-78xx
Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0)
Adaptec AHA290x/291x/294x/394x/4944/AIC78xx PCI SCSI Controller(NT 4.0)
Manufacturers
Supported Operating Systems
Windows 2003, Windows XP, Windows 2000, Windows NT4
File Name
Additional Notes
(For me) This is the missing link! AIC-78xx on-board SCSI driver for 98, 98b, NT, 2K
Uploaded By
MED (DG Member) on 5-Sep-2002
Ratings & Reviews
See all Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0) ratings and reviews
Related Driver Updates
How to Update Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0) Device Drivers
Step 1 - Download Your Driver
To get the Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0) driver, click the green download button above. After you complete your download, move on to Step 2.
If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Adaptec AHA-294xU2/295xU2/395xU2/AIC-789x PCI SCSI Controller(NT 4.0) into the search box above and then submit. In the results, choose the best match for your PC and operating system.
Tech Tip: If you are having trouble deciding which is the right driver, try the Adaptec Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the Adaptec website. Most major device manufacturers update their drivers regularly.
Step 2 - Install Your Driver
Open a tool called Device Manager.
Use Device Manager to put the new driver on your computer.
Turn your computer off.
Turn your computer back on.
Now your new driver is ready!
Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.
For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| WINNT/README.TXT | 22.0 KB | 22 May 2000 |
| WINNT/4_0/ULTRA2/aic78u2.inf | 7.0 KB | 22 Jun 2000 |
| WINNT/4_0/ULTRA2/AIC78U2.DBG | 28.6 KB | 7 Mar 2000 |
| WINNT/4_0/ULTRA2/AIC78U2.SYS | 75.8 KB | 16 Sep 1999 |
| WINNT/4_0/ULTRA/AIC78XX.DBG | 24.7 KB | 7 Mar 2000 |
| WINNT/4_0/ULTRA/aic78xx.inf | 7.0 KB | 22 Jun 2000 |
| WINNT/4_0/ULTRA/AIC78XX.SYS | 63.7 KB | 16 Sep 1999 |
| README.TXT | 2.1 KB | 22 Jun 2000 |
| TXTSETUP.OEM | 682 bytes | 17 May 2000 |
| NETWARE/README.TXT | 24.4 KB | 6 Jun 2000 |
| NETWARE/AIC78U2.HAM | 140.3 KB | 24 Apr 2000 |
| NETWARE/AHA2940.DDI | 6.6 KB | 17 Nov 1999 |
| NETWARE/AIC78U2.DDI | 7.5 KB | 22 May 2000 |
| NETWARE/DELLSEP.DDI | 2.3 KB | 20 Nov 1998 |
| NETWARE/NWASPI.CDM | 15.0 KB | 25 Apr 2000 |
| NETWARE/DELLSEP.CDM | 2.3 KB | 20 Nov 1998 |
| NETWARE/AHA2940.HAM | 109.0 KB | 25 Apr 2000 |
| DISK1 | 33 bytes | 16 Sep 1999 |
| DOS/READDOS.TXT | 6.2 KB | 16 Sep 1999 |
| DOS/ASPI8DOS.SYS | 37.8 KB | 14 Sep 1999 |
| DOS/ASPI8U2.SYS | 40.8 KB | 16 Sep 1999 |
| DOS/ASPICD.SYS | 29.6 KB | 16 Sep 1999 |