Modem Master ctr-21 Driver Download
Download the latest version of the ctr-21 driver for your computer's operating system. This driver - "SM56HLPR.EXE" - has been downloaded 533 times and is rated 5 out of 5 stars based on 8 reviews. It is compatible with PCs running Windows XP, among other operating systems. The total disk space used for this update is 413.7 KB.
Supported Models
ctr-21
Manufacturers
Supported Operating Systems
Windows XP
File Name
Uploaded By
adel (DG Member) on 5-Dec-2003
Related Driver Updates
How to Update ctr-21 Device Drivers
Step 1 - Download Your Driver
To get the ctr-21 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 Modem Master ctr-21 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 Driver Update Utility for Modem Master ctr-21. 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:
Right-click the Start button.
Click "Device Manager">
Find your device in the list.
Right-click the device and select "Update driver"
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.