Adaptec 1542 ISA SCSI Card
The 1542 SCSI card must be inserted into your computer and be conflict free, before you can add the software drivers.

Installing Software Drivers
When all conflicts are resolved between the SCSI card and any other components of the system, the software drivers can be loaded. Loading software drivers before conflicts are resolved usually necessitates a lengthy uninstall procedure. With a conflict-free hardware configuration, software installation is generally routine. Also, make sure all connections are snug, and both the tower and computer are turned on before proceeding.

Windows 9x/ME Driver Installation
Repeat the steps under Determining Correct Hardware Settings described previously. Continue from the screen that starts "Windows can Install your hardware using the following settings":

1. Double-click on My Computer
2. Double-click on Control Panel
3. Double-click on Add New Hardware
4. Click on Next.
5. When asked, "Do you want Windows to search for your new hardware?" click NO, then Next
6. Select SCSI Controllers, then Next
7. Select Adaptec AHA-154X/AHA-164X SCSI Host Adapter, not the Plug and Play version. The OSR2 version of Windows 95 lists the driver under the name Adaptec AHA-154x/AHA-164x/AHA-1535 SCSiI Host Adapter.
8. Click Next. When prompted click Finish.
9. Follow the directions on the screen.
10. Shut down Windows. Reboot the computer.
11. Verify your installation by accessing Device Manager
    1. Double-click on My Computer.
    2. Double-click on Control Panel.
    3. Double-click on System.
    4. Select Device Manager.
    5. Double-click on SCSI Controllers.
    6. Make sure that a red ! or yellow X does NOT appear at the left the AHA-154X line. If one of these symbols apperas, the SCSI card or the software driver is in conflict. Uninstall both, and begin the process again.

Altering Drive Letter Order In Windows 9x/ME
Sometimes Windows 9x/ME automatically places the internal CD drive at the end of the alphabet after the CD tower. To restore it to the first CD drive letter use the following procedure:

1. Click on Start.
2. Select Settings, then Control Panel.
3. Select System, sometimes scrolling to the bottom of the Window helps.
4. Select Device Manager.
5. Select the first CD-ROM drive.
6. Enter the Start drive letter desired, and the same letter for the End drive letter.
7. Repeat this procedure for the CD tower, making sure that no letters are duplicated. The letter assignments for a 7 bay tower with one internal CD may resemble the chart below.

7 Bay Tower - Drive Placement	Current Letter	Change to...
Internal CD-ROM	K	D
Tower Drive Bay 0 (top)	D	E
Tower Drive Bay 1	E	F
Tower Drive Bay 2	F	G
Tower Drive Bay 3	G	H
Tower Drive Bay 4	H	I
Tower Drive Bay 5	I	J
Tower Drive Bay 6 (bottom)	J	K

DOS, Windows 3.1 and Windows for Workgroups Driver Installation
EZ-SCSI software enables your PC to communicate with the CD-ROM tower. To install the EZ-SCSI software, follow these steps:

1. After the card has been installed and the computer has booted, ending at the prompt C:\ or C:\WINDOWS, place the 3 ½" floppy disk in your floppy drive.
2. At the DOS prompt, type the letter of your floppy drive and hit <Enter>. For example: C:\WINDOWS> A:
3. Type the command install followed by <Enter>. For example: A:\>install.
4. Follow the screen prompts to complete the driver installation.