Hayes NDIS WAN Miniport Adapter Driver Download

Hayes Drivers

The NDIS WAN Miniport Adapter is a modem manufactured by Hayes. If you cannot connect to the network, or have slow transfer speeds or intermittent disconnection problems, you may need to update your modem driver or firmware. This driver - "USB321DRV.zip" - has been downloaded 494 times and is rated 3 out of 5 stars based on 6 reviews. It is compatible with PCs running Windows XP, among other operating systems. The total disk space used for this update is 723.0 KB.

6 Ratings

Supported Models


NDIS WAN Miniport Adapter




Supported Operating Systems

Windows XP

File Name

Additional Notes

copy and paste the following URL to download the utility file

you will need to unzip all files, then point driver update to them


Uploaded By

Simon Wardle (DG Member) on 26-Mar-2002

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
UNINSTAL.EXE 66.6 KB 19 Dec 2001
CAPI20.DLL 9.0 KB 1 Dec 1999
CAPI20.98 8.2 KB 30 Nov 1999
CAPI2032.DLL 9.2 KB 20 Oct 2000
ISDN_U.xp_ 236.4 KB 29 Oct 2001
README.TXT 2.3 KB 31 Dec 1999
CAPITASK.EXE 3.6 KB 30 May 1998
VCAPID16.VX_ 9.8 KB 12 Oct 1999
ISDN_u.98_ 246.2 KB 29 Oct 2001
ISDN-U.inf.bak 22.9 KB 14 Dec 2001
ISDN-U.inf 26.2 KB 21 Jan 2002
NOTECAPI.EX_ 9.9 KB 7 Aug 2000
REMOVE.EXE 24.1 KB 2 Nov 2000
WDMWANMP.SY_ 16.4 KB 22 Apr 2001
ISDNCOIN.DLL 38.7 KB 19 Dec 2001
ISDN_u.sy_ 246.6 KB 29 Oct 2001
WINWANUI.DL_ 13.8 KB 15 Jan 2002
WDMWANMP.98_ 20.1 KB 18 Aug 2000

How to Update NDIS WAN Miniport Adapter Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the NDIS WAN Miniport Adapter 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 Hayes NDIS WAN Miniport Adapter 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 Hayes 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 Hayes. All company names/logos are properties of their owners.
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