ProStar W840T Driver Download (Official)

ProStar Drivers

The W840T is a network device manufactured by ProStar. Issues like weak Wi-Fi signal, slow DNS lookup, duplicate IP addresses, slow network and excessive CPU usage can be solved by updating this driver. This version of "" has been downloaded 26 times with a user rating of 5 out of 5 stars, based on 5 reviews. Compatibility for this driver update includes PCs running Windows operating systems such as Windows 7. The total disk space used for this update is 975.8 KB.

5 Ratings

Supported Models


JMicron PCI Express Fast Ethernet Adapter

JMicron PCI Express Gigabit Ethernet Adapter




Supported Operating Systems

Windows 7, Windows 7 (64 bit)

File Name

Versions (9-Mar-2010)

Additional Notes

Integrated Ethernet Controller Driver File

Uploaded By

Karthika (DG Staff Member) on 25-Feb-2011

How to Update W840T Device Drivers

Step 1 - Download Your Driver

To get the W840T driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter ProStar W840T into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the ProStar Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

To install your new driver on Windows:

  1. Right-click the Start button.

  2. Click "Device Manager">

  3. Find your device in the list.

  4. Right-click the device and select "Update driver"

  5. Follow the steps on screen.

Restart your computer when done.

This keeps your computer working at its best.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
03_LAN/Application/DIFxAPI.dll 319.5 KB 1 Nov 2006
03_LAN/Application/setup.dll 65.5 KB 11 May 2009
03_LAN/Application/x64/DIFxAPI.dll 525.8 KB 1 Nov 2006
03_LAN/Driver/WLh/JME.inf 28.0 KB 13 Aug 2009
03_LAN/Driver/WLh/JME.sys 87.2 KB 13 Aug 2009
03_LAN/Driver/WLh/ 10.0 KB 17 Aug 2009
03_LAN/Driver/WLh64/JME.inf 28.0 KB 13 Aug 2009
03_LAN/Driver/WLh64/JME.sys 102.0 KB 13 Aug 2009
03_LAN/Driver/WLh64/ 10.0 KB 17 Aug 2009
03_LAN/Driver/WNet64/JME.inf 22.5 KB 13 Aug 2009
03_LAN/Driver/WNet64/JME.sys 80.5 KB 13 Aug 2009
03_LAN/Driver/WNet64/ 9.9 KB 19 Aug 2009
03_LAN/Driver/Win7/JME.inf 28.0 KB 13 Aug 2009
03_LAN/Driver/Win7/JME.sys 87.2 KB 13 Aug 2009
03_LAN/Driver/Win7/ 10.0 KB 17 Aug 2009
03_LAN/Driver/Win764/JME.inf 28.0 KB 13 Aug 2009
03_LAN/Driver/Win764/JME.sys 102.0 KB 13 Aug 2009
03_LAN/Driver/Win764/ 10.0 KB 17 Aug 2009
03_LAN/Driver/WinXP/JME.inf 22.5 KB 13 Aug 2009
03_LAN/Driver/WinXP/JME.sys 65.6 KB 13 Aug 2009
03_LAN/Driver/WinXP/ 9.9 KB 19 Aug 2009
03_LAN/Setup.exe 1.1 MB 20 Aug 2009
03_LAN/setup.ini 4.8 KB 27 Aug 2009
03_LAN/silentsetup.bat 31 bytes 24 Feb 2009
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