ATTO Technology, Inc. ATTO ExpressSAS M644 Host Adapter - two ways of downloading and installing the driver

ATTO ExpressSAS M644 Host Adapter is a SCSI Adapter device. This driver was developed by ATTO Technology, Inc.. The hardware id of this driver is PCI/VEN_117C&DEV_0042&SUBSYS_0058117C.

1. ATTO Technology, Inc. ATTO ExpressSAS M644 Host Adapter driver - how to install it manually

1. Download the setup file for ATTO Technology, Inc. ATTO ExpressSAS M644 Host Adapter driver from the link below. This download link is for the driver version 2.20.4000.6000 released on 2016-12-15.
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3. Run the driver installation file from a Windows account with the highest privileges (rights). If your User Access Control Service (UAC) is running then you will have to confirm the installation of the driver and run the setup with administrative rights.
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5. Go through the driver setup wizard, which should be pretty straightforward. The driver setup wizard will analyze your PC for compatible devices and will install the driver.
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7. Shutdown and restart your PC and enjoy the fresh driver, as you can see it was quite smple.
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ATTO Technology, Inc. applied a digital signature to this driver.
Driver file size: 417960 bytes (408.16 KB)
Driver rating 5 stars out of 44753 votes.
This driver was released for the following versions of Windows:

• This driver works on Windows XP 64 bits
• This driver works on Windows Vista 64 bits
• 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 M644 Host Adapter driver using DriverMax: the easy way

The most important advantage of using DriverMax is that it will setup 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 scan and analyze each driver on your PC.
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3. Take a look at the list of detected driver updates. Scroll the list down until you locate the ATTO Technology, Inc. ATTO ExpressSAS M644 Host Adapter driver. Click the Update button.
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5. That's all, the driver is now installed!
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