DriverCove

DAVICOM Semiconductor, Inc. - Network - DM9621 USB To Fast Ethernet Adapter(KMDF) Driver 4.2.0.1011

by Davicom Semiconductor, Inc.8.18732-bitSHA-256 verified

Manufacturer
Davicom Semiconductor, Inc.
Device
DAVICOM Semiconductor, Inc. - Network - DM9621 USB To Fast Ethernet Adapter(KMDF)
Driver version
4.2.0.1011
Release date
October 11, 2010
Supported Windows
Windows 8.1, Windows 8, Windows 7
Architecture
32-bit (x86)
File size
2.2 MB
File name
20395374_dacaa70d791b557c59eacb569aab91c085ca344b.cab
Digital signature
Signed - catalog dm9usb.cat
INF version
10/11/2010, 4.2.0.1011
INF provider
DAVICOM Semiconductor, Inc.
Device class
Net
Source
Microsoft Update Catalog
Last verified
July 8, 2026
SHA-256
749ab14de7248d92862f34fa19b6dec61dec6f6caeb43af92b82f03fd8420db5

Supported hardware IDs (4)

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

  1. Create a restore point(Start → "Create a restore point" → Create), so you can roll back if anything goes wrong.
  2. Verify compatibility: your Windows version (Windows 8.1, Windows 8, Windows 7) and architecture (x86)must match this driver, and your device's Hardware ID should appear in the list above.
  3. Download the file using the button - it comes directly from Microsoft Update Catalog.
  4. Optionally verify the checksum: open PowerShell, run Get-FileHash your-download.cab -Algorithm SHA256 and compare with the SHA-256 above.
  5. Extract the .cab archive: right-click → Extract All, or run expand -F:* file.cab C:\driver\ in Command Prompt.
  6. 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.
  7. 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).