Atto Celerity FC-41ES Driver Download (Official)

Atto Technology Drivers

The Celerity FC-41ES is a disk drive controller manufactured by Atto Technology. This driver fixes problems with drive not found, slow or unreliable data transfer, intermittent connection or hardware conflicts. This version of "winx64_drv_celerity_263.exe" has been downloaded 66 times with a user rating of 5 out of 5 stars, based on 10 reviews. It is compatible with PCs running Windows Vista and Windows XP, among other operating systems. The total disk space used for this update is 1.0 MB.

10 Ratings

Supported Models

Celerity FC-41ES

ATTO Celerity FC-21PS Fibre Channel Adapter

ATTO Celerity FC-22XH Fibre Channel Adapter

ATTO Celerity FC-22XS Fibre Channel Adapter

ATTO Celerity FC-24XL Fibre Channel Adapter

ATTO Celerity FC-24XS Fibre Channel Adapter

ATTO Celerity FC-41EL Fibre Channel Adapter

ATTO Celerity FC-41EN Fibre Channel Adapter



Supported Operating Systems

Windows 2008 (64 bit), Windows Vista (64 bit), Windows 2003 (64 bit), Windows XP (64 bit)

File Name


2.63 (3-Dec-2008) (2008-03-25) via .inf (2008-11-24) via .inf

Additional Notes

Single-Channel 4-Gb Fibre Channel PCIe Host Adapter

Uploaded By

Sathishkumar (DG Staff Member) on 14-Aug-2009

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
Setup.exe 456.7 KB 18 Aug 2008
Storport/attofc.dll 142.9 KB 15 Apr 2008
Storport/attofc_x.dll 166.9 KB 15 Apr 2008
Storport/ 11.4 KB 24 Nov 2008
Storport/clrtyfc.inf 9.0 KB 24 Nov 2008
Storport/clrtyfc.sys 303.6 KB 24 Nov 2008
Storport/makedisk.bat 986 bytes 11 Sep 2007
Storport/makedisk.exe 16.4 KB 15 Oct 2006
attofc.dll 142.9 KB 15 Apr 2008
attofc_x.dll 166.9 KB 15 Apr 2008 10.1 KB 24 Nov 2008
attomtln.inf 2.3 KB 25 Mar 2008
clrtyfc 38 bytes 24 Nov 2003 11.4 KB 24 Nov 2008
clrtyfc.inf 9.8 KB 24 Nov 2008
clrtyfc.sys 304.2 KB 24 Nov 2008
makedisk.bat 965 bytes 15 Sep 2007
makedisk.exe 16.4 KB 15 Oct 2006
txtsetup.oem 1.3 KB 8 Nov 2007

How to Update Celerity FC-41ES Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the Celerity FC-41ES driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Atto Celerity FC-41ES into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Atto Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Atto website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with Atto. All company names/logos are properties of their owners.
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