3Com I-Modem EXT (TurboPPP 128K Profile) Driver Download

3Com Drivers

The I-Modem EXT (TurboPPP 128K Profile) is a modem manufactured by 3Com. 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 - "extmo.zip" - has been downloaded 726 times and is rated 5 out of 5 stars based on 13 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 66.3 KB.

13 Ratings (see all reviews)

Supported Models


56K Professional Message Modem EXT

Courier I-modem EXT

Courier I-modem EXT PnP

Courier I-modem INT PnP

Courier V.Everything EXT (V.90&x2)

Courier V.Everything EXT PnP (V.90&x2)

Courier V.Everything INT (V.90&x2)



US Robotics

Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows NT3.51, Windows ME, Windows 98SE, Windows 98, Windows 95, Windows 3.1

File Name

Uploaded By

innosys (DG Member) on 5-Jun-2000

Ratings & Reviews

See all 3Com I-Modem EXT (TurboPPP 128K Profile) ratings and reviews

Related Driver Updates

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
MDM3CMIE.INF 55.9 KB 27 Aug 1998
MDM3CMMO.INF 50.7 KB 28 Jan 1999
MDM3CMIM.INF 55.2 KB 27 Aug 1998
README.TXT 170 bytes 18 Dec 1996
MODEM.INF 265.7 KB 18 Dec 1996
3COMSPTA.INF 6.4 KB 14 Oct 1998
MDM3CMMD.INF 48.6 KB 28 Jan 1999
MDM3CMCR.INF 56.9 KB 21 Dec 1998
MDM3CMVO.INF 50.2 KB 23 Sep 1998
USRIWAVE.INF 2.0 KB 4 Feb 1998
CONTENT.TXT 979 bytes 18 Feb 1999
MDM3CMM2.INF 50.9 KB 15 Feb 1999
MSW3CMVO.INF 2.0 KB 13 Oct 1998
MDMWPCE.INF 26.6 KB 2 Oct 1997
MDMWPDS.INF 21.6 KB 23 Apr 1997
MDMUSRF2.INF 63.9 KB 11 Feb 1998

How to Update I-Modem EXT (TurboPPP 128K Profile) Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the I-Modem EXT (TurboPPP 128K Profile) 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 3Com I-Modem EXT (TurboPPP 128K Profile) 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 3Com Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the 3Com website. Most major device manufacturers update their drivers regularly.

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 3Com. All company names/logos are properties of their owners.
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