ATTO Technology, Inc. ATTO ExpressSAS R644 RAID Adapter how to download and install the driver

ATTO ExpressSAS R644 RAID Adapter is a SCSI Adapter device. The Windows version of this driver was developed by ATTO Technology, Inc.. PCI/VEN_117C&DEV_0049&SUBSYS_004D117C is the matching hardware id of this device.

1. ATTO Technology, Inc. ATTO ExpressSAS R644 RAID Adapter - install the driver manually

1. Download the driver setup file for ATTO Technology, Inc. ATTO ExpressSAS R644 RAID Adapter driver from the location below. This is the download link for the driver version 2.75.4000.6000 dated 2016-11-05.
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3. Start the driver installation file from a Windows account with the highest privileges (rights). If your UAC (User Access Control) is started then you will have to accept of the driver and run the setup with administrative rights.
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5. Go through the driver installation wizard, which should be pretty easy to follow. The driver installation wizard will analyze your PC for compatible devices and will install the driver.
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7. Restart your PC and enjoy the fresh driver, it is as simple as that.
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ATTO Technology, Inc. applied a digital signature to this driver.
Download size of the driver: 71194 bytes (69.53 KB)
This driver was installed by many users and received an average rating of 4.4 stars out of 93897 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. How to install ATTO Technology, Inc. ATTO ExpressSAS R644 RAID Adapter driver using DriverMax

The 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, not just this one. How easy can you install a driver using DriverMax? Let's take a look!

1. Start 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 driver updates. Scroll the list down until you locate the ATTO Technology, Inc. ATTO ExpressSAS R644 RAID Adapter driver. Click on Update.
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5. That's it, you installed your first driver!
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