HD1 Driver 8.1.1.21
by C-Media Inc.8.1864-bit32-bitSHA-256 verified
- Manufacturer
- C-Media Inc.
- Device
- HD1
- Driver version
8.1.1.21- Release date
- September 14, 2015
- Supported Windows
- Windows 8.1, Windows 8
- Architecture
- 64-bit (x64), 32-bit (x86)
- File size
- 2.8 MB
- File name
20783945_0a9a9381d4a1e612cb67dec64dbbaf304c7204c4.cab- Digital signature
- Signed - catalog
RIG5020HD.cat - INF version
09/14/2015,8.1.01.21- INF provider
- C-MEDIA Inc.
- Device class
- Media
- Source
- Microsoft Update Catalog
- Last verified
- July 8, 2026
- SHA-256
51673417d1d7506bb03ba1b683903646a1b3fb51526ce7589d7c33d63fda7aae
Supported hardware IDs (1)
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 8.1, Windows 8) and architecture (x64, 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).
Other versions of this driver
| Version | Released | Source |
|---|---|---|
| 8.1.1.22 | September 16, 2015 | Microsoft Update Catalog |
| 10.0.1.22 | September 16, 2015 | Microsoft Update Catalog |
| 8.0.1.22 | September 16, 2015 | Microsoft Update Catalog |
| 7.0.1.22 | September 16, 2015 | Microsoft Update Catalog |
| 7.0.1.21 | September 14, 2015 | Microsoft Update Catalog |
| 10.0.1.21 | September 14, 2015 | Microsoft Update Catalog |
| 8.0.1.21 | September 14, 2015 | Microsoft Update Catalog |