J&W JW-I945GCA2-HDA Driver Download (Official)

J and W Drivers

The JW-I945GCA2-HDA is a network device manufactured by J and W. 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. Visitors have downloaded this file "PCI_Install_5673_1022.zip" 86 times with an aggregate rating of 5 out of 5 stars based on 7 reviews. The uploader reports that this update will work successfully on PCs running Windows XP. The total disk space used for this update is 4.8 MB.

7 Ratings

Supported Models


(MOBILE ASSIST)Realtek RTL8139/810x Family Fast Ethernet NIC



Realtek RTL8139/810X Family Fast Ethernet NIC

Realtek RTL8139C+ Fast Ethernet NIC

Realtek RTL8169/8110 Family Gigabit Ethernet NIC




Supported Operating Systems

Windows XP

File Name


5.673 (20-Nov-2007)

Additional Notes

Realtek PCI LAN Driver (XP)

Uploaded By

Manivannan (DG Staff Member) on 29-Jul-2010

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
PCI_Install_5673_1022/ISSetup.dll 492.0 KB 5 Apr 2007
PCI_Install_5673_1022/RELEASE.TXT 26.7 KB 12 Jul 2007
PCI_Install_5673_1022/WIN2000/Netrtlx.inf 381.3 KB 18 Oct 2007
PCI_Install_5673_1022/WIN2000/Rtnic.sys 94.6 KB 12 Jul 2007
PCI_Install_5673_1022/WIN2000/netrtl.cat 349.3 KB 19 Oct 2007
PCI_Install_5673_1022/WIN98SE/Netrtlx.inf 36.2 KB 12 Jul 2007
PCI_Install_5673_1022/WIN98SE/Rtnic.sys 94.6 KB 12 Jul 2007
PCI_Install_5673_1022/WINME/Netrtlx.inf 36.2 KB 12 Jul 2007
PCI_Install_5673_1022/WINME/Rtnic.sys 94.6 KB 12 Jul 2007
PCI_Install_5673_1022/WINXP/Netrtlx.inf 381.3 KB 18 Oct 2007
PCI_Install_5673_1022/WINXP/Rtnic.sys 94.6 KB 12 Jul 2007
PCI_Install_5673_1022/WINXP/Rtnic64.sys 114.7 KB 12 Jul 2007
PCI_Install_5673_1022/WINXP/Rtnicxp.sys 96.4 KB 12 Jul 2007
PCI_Install_5673_1022/WINXP/netrtl.cat 349.3 KB 19 Oct 2007
PCI_Install_5673_1022/_setup.dll 373.7 KB 18 May 2006
PCI_Install_5673_1022/data1.cab 3.3 MB 16 Aug 2007
PCI_Install_5673_1022/data2.cab 135.7 KB 16 Aug 2007
PCI_Install_5673_1022/layout.bin 473 bytes 16 Aug 2007
PCI_Install_5673_1022/setup.exe 455.6 KB 20 Jan 2007
PCI_Install_5673_1022/setup.ini 975 bytes 13 Aug 2007
PCI_Install_5673_1022/setup.isn 64.4 KB 17 May 2006

How to Update JW-I945GCA2-HDA Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the JW-I945GCA2-HDA 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 J&W JW-I945GCA2-HDA 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 J&W Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

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.

This website is not affiliated with J&W. All company names/logos are properties of their owners.
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