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Cypress - Other hardware - USB-Serial (Dual Channel) Vendor 1 Driver 1.2.3.9

by Cypress864-bitSHA-256 verified

Manufacturer
Cypress
Device
Cypress - Other hardware - USB-Serial (Dual Channel) Vendor 1
Driver version
1.2.3.9
Release date
March 3, 2014
Supported Windows
Windows 8
Architecture
64-bit (x64)
File size
1.5 MB
File name
20638271_a8383dade1dcf94f24b20e92cf0d059be374089e.cab
Digital signature
Signed - catalog CYUSB3.cat
INF version
03/03/2014,1.2.3.9
INF provider
Cypress
Device class
USB
Source
Microsoft Update Catalog
Last verified
July 8, 2026
SHA-256
602bd482a10c9bf1693b61343113ade0f8c86a2cb33b8a8f58ff03fd8c4db28d

Supported hardware IDs (37)

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) and architecture (x64)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).

Other versions of this driver

VersionReleasedSource
1.2.3.14August 19, 2015Microsoft Update Catalog
1.2.3.10August 21, 2014Microsoft Update Catalog
1.2.3.10August 21, 2014Microsoft Update Catalog
1.2.3.3May 2, 2013Microsoft Update Catalog