Specifications
6 ATTO Technology Inc. ATTO ExpressSAS Host & RAID Adapter Installation and Operation Manual
2  Install Drivers 
ATTO ExpressSAS host adapters require a current device driver and hardware flash for proper operation. 
Your adapter was properly flashed before shipment. 
However, you must add ExpressSAS drivers to your 
computer before continuing with installation.
If you already have one or more ExpressSAS adapters 
installed and you have the latest drivers found on the 
ATTO web site, or you followed the instructions in the 
Getting Started Guide, you do not need to perform
any 
of these procedures.
Drivers for Windows, OS X and Linux are supplied on 
the Installation CD and on the ATTO web site.
Exhibit 2-1  The Installation CD splash screen. for the ExpressSAS RAID host adapter.
Downloading drivers from the ATTO website
Use this procedure if you need to update drivers. The 
latest driver for your adapter can be found on the 
ATTO website.
1Go to www.attotech.com.
2 On the splash screen menu, put your cursor 
over Downloads then click on Product 
Downloads.
3 Register or log in if previously registered.
4Select SAS/SATA Host & RAID Adapters 
from the product list.
5 Select your model.
6 From the table, find your Operating System.
7 Click on the entry for the latest driver.
8 A download window appears. Follow the 
instructions for downloading the driver.
Internet Explorer users may select Run to 
automatically run the downloaded self-
extracting executable file. 
All other browser users select a download 
destination and run the self-extracting 
executable file.
9 Continue with the driver installation as 
described on the following pages for your 
Operating System.










