ATTO Technology, Inc. - Storage - ATTO Celerity FC-81EP Fibre Channel Adapter Driver 1.50.2.0
by Atto Technology, Inc.Windows 11Windows 1032-bitSHA-256 verified
- Manufacturer
- Atto Technology, Inc.
- Device
- ATTO Technology, Inc. - Storage - ATTO Celerity FC-81EP Fibre Channel Adapter
- Driver version
1.50.2.0- Release date
- March 25, 2008
- Supported Windows
- Windows 11, Windows 10
- Architecture
- 32-bit (x86)
- File size
- 205 KB
- File name
20263108_c7949e02679479a90b50754461162527ba81115c.cab- Digital signature
- Signed - catalog
Clrty8FC.cat - INF version
05/01/2009,1.10.2.0- INF provider
- ATTO Technology, Inc.
- Device class
- SCSIAdapter
- Source
- Microsoft Update Catalog
- Last verified
- July 8, 2026
- SHA-256
7d0b2b0c9795278070861f26a687088eb71a721ee144b3b345167bc1ba3b35f0
Supported hardware IDs (6)
- PCI\VEN_11F8&DEV_8031&SUBSYS_003D117C
- PCI\VEN_11F8&DEV_8031&SUBSYS_003E117C
- PCI\VEN_11F8&DEV_8031&SUBSYS_003F117C
- PCI\VEN_11F8&DEV_8032&SUBSYS_003A117C
- PCI\VEN_11F8&DEV_8032&SUBSYS_003B117C
- PCI\VEN_11F8&DEV_8032&SUBSYS_003C117C
Compare with your device: Device Manager → right-click the device → Properties → Details → Hardware Ids. If one of the values above matches, this driver supports your hardware.
How to install
- Create a restore point(Start → "Create a restore point" → Create), so you can roll back if anything goes wrong.
- Verify compatibility: your Windows version (Windows 11, Windows 10) and architecture (x86)must match this driver, and your device's Hardware ID should appear in the list above.
- Download the file using the button - it comes directly from Microsoft Update Catalog.
- Optionally verify the checksum: open PowerShell, run
Get-FileHash your-download.cab -Algorithm SHA256and compare with the SHA-256 above. - Extract the .cab archive: right-click → Extract All, or run
expand -F:* file.cab C:\driver\in Command Prompt. - Install via Device Manager: right-click your device → Update driver → Browse my computer → point to the extracted folder. Alternatively run
pnputil /add-driver C:\driver\*.inf /install. - Check Device Manager: the device should show no warning icons, and the driver version should match.
How to roll back
If the device stops working after the update: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver. If the button is greyed out, use the restore point from step 1 (Start → "Recovery" → Open System Restore).