ATTO Technology, Inc. ATTO ExpressSAS W644 Host Adapter - two ways of downloading and installing the driver

ATTO ExpressSAS W644 Host Adapter is a SCSI Adapter device. The developer of this driver was ATTO Technology, Inc.. The hardware id of this driver is PCI/VEN_117C&DEV_0042&SUBSYS_005B117C; this string has to match your hardware.

1. ATTO Technology, Inc. ATTO ExpressSAS W644 Host Adapter driver - how to install it manually

1. You can download from the link below the driver setup file for the ATTO Technology, Inc. ATTO ExpressSAS W644 Host Adapter driver. The archive contains version 2.350.4001.6000 released on 2020-01-28 of the driver.
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3. Start the driver installer file from a user account with administrative rights. If your User Access Control Service (UAC) is enabled please confirm the installation of the driver and run the setup with administrative rights.
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5. Go through the driver installation wizard, which will guide you; it should be pretty easy to follow. The driver installation wizard will scan your computer and will install the right driver.
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7. When the operation finishes restart your PC in order to use the updated driver. It is as simple as that to install a Windows driver!
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ATTO Technology, Inc. applied a digital signature to this driver.
Download size of the driver: 423091 bytes (413.17 KB)
This driver was rated with an average of 4.5 stars by 23861 users.
This driver is compatible with the following versions of Windows:

• This driver works on Windows 7 64 bits
• This driver works on Windows 8 64 bits
• This driver works on Windows 8.1 64 bits
• This driver works on Windows 10 64 bits
• This driver works on Windows 11 64 bits

2. Installing the ATTO Technology, Inc. ATTO ExpressSAS W644 Host Adapter driver using DriverMax: the easy way

The most important advantage of using DriverMax is that it will install the driver for you in the easiest possible way and it will keep each driver up to date. How can you install a driver using DriverMax? Let's see!

1. Open DriverMax and press on the yellow button named ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to analyze each driver on your PC.
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3. Take a look at the list of available driver updates. Search the list until you find the ATTO Technology, Inc. ATTO ExpressSAS W644 Host Adapter driver. Click on Update.
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5. That's it, you installed your first driver!
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