DriverCove

Prolific - Other hardware - PL2503 USB2.0 HS Serial Port Driver 4.0.0.4

by Prolific8.18732-bit64-bitSHA-256 verified

Manufacturer
Prolific
Device
Prolific - Other hardware - PL2503 USB2.0 HS Serial Port
Driver version
4.0.0.4
Release date
August 28, 2014
Supported Windows
Windows 8.1, Windows 8, Windows 7
Architecture
32-bit (x86), 64-bit (x64)
File size
1.5 MB
File name
20680388_7d1316708846cc6b8a46f46434586ba390d8736e.cab
Digital signature
Signed - catalog acm2pl.cat
INF version
08/28/2014,4.0.0.4
INF provider
Prolific
Device class
Ports
Source
Microsoft Update Catalog
Last verified
July 8, 2026
SHA-256
bf89ebf3e8cd8d7123a1b925abc1626a5c733b6fd2a2e8908f58607b3d1fef72

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

  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, 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).