CH340 serial converter Driver 3.4.2014.8
by wch.cn8.1832-bitSHA-256 verified
- Manufacturer
- wch.cn
- Device
- CH340 serial converter
- Driver version
3.4.2014.8- Release date
- August 8, 2014
- Supported Windows
- Windows 8.1, Windows 8
- Architecture
- 32-bit (x86)
- File size
- 88 KB
- File name
20712561_da2389de3e27b0ca87312a0e8d187be11de354c3.cab- Digital signature
- Signed - catalog
CH341SER.CAT - INF version
08/08/2014, 3.4.2014.08- INF provider
- wch.cn
- Device class
- Ports
- Source
- Microsoft Update Catalog
- Last verified
- July 8, 2026
- SHA-256
e8d13c31bdeb5dda086ca2ca5f1875cbd62cf45e93fa4af51e417e327c496eda
Supported hardware IDs (6)
- USB\VID_1A86&PID_5523
- USB\VID_1A86&PID_7523
- USB\VID_4348&PID_5523
- USB\VID_4348&PID_5523&REV_0250
- CH341PORT\SER5523
- USBSERPORT\SER5523
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 (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 |
|---|---|---|
| 2.1.2025.7 | July 19, 2025 | Microsoft Update Catalog |
| 2.0.2025.3 | March 3, 2025 | Microsoft Update Catalog |
| 3.9.2024.9 | September 16, 2024 | Microsoft Update Catalog |
| 3.8.2023.2 | February 11, 2023 | Microsoft Update Catalog |
| 3.5.2019.1 | January 30, 2019 | Microsoft Update Catalog |
| 3.3.2011.11 | November 4, 2011 | Microsoft Update Catalog |
| 3.1.2009.6 | June 3, 2009 | Microsoft Update Catalog |