3Com Megahertz Telephony 3CXM556 Modem Driver Download
The Megahertz Telephony 3CXM556 Modem 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 version of "et-7953-mdm-3cxm556-co-n.zip" has been downloaded 19 times with a user rating of 4 out of 5 stars, based on 5 reviews. The uploader reports that this update will work successfully on PCs running Windows Vista and Windows XP. The total disk space used for this update is 911.9 KB.
Supported Models
Megahertz Voice Modem Serial Wave Device
Megahertz Telephony 3CXM556 Modem
Manufacturers
Supported Operating Systems
Windows Vista, Windows Vista (64 bit), Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95
File Name
Uploaded By
DriverGuide (DG Staff Member) on 6-May-2009
Related Driver Updates
Driver Contents File List
The following files are found inside the driver download file.
| Name | Size | Date |
|---|---|---|
| ATCMDS.TXT | 11.3 KB | 18 May 1998 |
| CLRCOM.EXE | 3.8 KB | 13 Oct 1997 |
| CRCTREE.EXE | 11.4 KB | 25 Mar 1998 |
| DIAGWIN/DIAGNOSE.VXD | 12.9 KB | 5 Aug 1997 |
| DIAGWIN/DIAGWIN.EXE | 201.1 KB | 27 Apr 1998 |
| DIAGWIN/DIAGWIN.INI | 41 bytes | 31 Jul 1997 |
| DIAGWIN/TERM1.HT | 937 bytes | 2 Jul 1997 |
| DIAGWIN/TERM2.HT | 937 bytes | 2 Jul 1997 |
| DIAGWIN/TERM3.HT | 1.2 KB | 8 Sep 1997 |
| DIAGWIN/TERM4.HT | 937 bytes | 2 Jul 1997 |
| DIAGWIN/W31COM1.TRM | 4.1 KB | 5 Aug 1997 |
| DIAGWIN/W31COM2.TRM | 4.1 KB | 5 Aug 1997 |
| DIAGWIN/W31COM3.TRM | 4.1 KB | 5 Aug 1997 |
| DIAGWIN/W31COM4.TRM | 4.1 KB | 5 Aug 1997 |
| ENABLE.EXE | 69.4 KB | 29 Sep 1997 |
| ENABLE.INI | 2.9 KB | 6 Dec 1995 |
| MCD.DLL | 8.4 KB | 3 Feb 1997 |
| MDMXM556.INF | 48.4 KB | 27 Apr 1998 |
| MEGACHEK.EXE | 26.9 KB | 13 Oct 1997 |
| MODEM.INI | 1.9 KB | 8 May 1998 |
| README.TXT | 17.9 KB | 18 May 1998 |
| REGISTER.EXE | 103.4 KB | 29 Sep 1997 |
| REGISTER.INI | 86 bytes | 18 Mar 1998 |
| SCRIPTS/CCMAIL/INSTALL.BAT | 292 bytes | 19 Mar 1998 |
| SCRIPTS/CCMAIL/MHZ_V90.MDM | 2.2 KB | 26 Mar 1998 |
| SCRIPTS/LAPLINK/INSTALL.BAT | 474 bytes | 19 Mar 1998 |
| SCRIPTS/LAPLINK/MHZ_V90.LAP | 341 bytes | 18 Mar 1998 |
| SCRIPTS/LOTNOTES/INSTALL.BAT | 295 bytes | 19 Mar 1998 |
| SCRIPTS/LOTNOTES/MHZ_V90N.MDM | 7.0 KB | 26 Mar 1998 |
| SCRIPTS/MSMAIL/INSTALL.BAT | 283 bytes | 19 Mar 1998 |
| SCRIPTS/MSMAIL/MHZ_V90.MSM | 13.0 KB | 18 Mar 1998 |
| SCRIPTS/MSMAIL/MHZ_V90.SCR | 9.2 KB | 18 Mar 1998 |
| SCRIPTS/NT_RAS/INSTALL.BAT | 440 bytes | 19 Mar 1998 |
| SCRIPTS/NT_RAS/MHZ_V90.RAS | 1.4 KB | 18 Mar 1998 |
| SCRIPTS/README.TXT | 2.3 KB | 26 Mar 1998 |
| SCRIPTS/SHIVA/INSTALL.BAT | 342 bytes | 19 Mar 1998 |
| SCRIPTS/SHIVA/MHZ_V90.SHV | 416 bytes | 18 Mar 1998 |
| SCRIPTS/WFW_RAS/INSTALL.BAT | 421 bytes | 19 Mar 1998 |
| SCRIPTS/WFW_RAS/MHZ_V90.RAS | 1.4 KB | 18 Mar 1998 |
| SETUP.EXE | 146.5 KB | 6 May 1998 |
| SETUP.INI | 3.1 KB | 18 May 1998 |
| SETUP.VXD | 12.9 KB | 1 Aug 1997 |
| SOFTWARE.EXE | 53.9 KB | 13 May 1998 |
| SOFTWARE.INI | 422 bytes | 15 Apr 1998 |
| SWVXM556.INF | 1.8 KB | 27 Apr 1998 |
| UNINSTAL.EXE | 76.9 KB | 19 Mar 1998 |
| UNINSTAL.INI | 393 bytes | 24 Apr 1998 |
| UNINSTAL.VXD | 12.9 KB | 1 Aug 1997 |
| WORLDPRT.EXE | 142.4 KB | 12 Dec 1997 |
| WORLDPRT.INI | 53 bytes | 2 Dec 1997 |
How to Update Megahertz Telephony 3CXM556 Modem Device Drivers Quickly & Easily
Step 1 - Download Your Driver
To get the Megahertz Telephony 3CXM556 Modem 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 Megahertz Telephony 3CXM556 Modem 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
Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.
Select the Driver tab.
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.