Windows XP, Windows 2000, Windows 98SE, Windows 98, Windows 95
MDP3858SP-U_Voice_Data_Fax_PCI_Modem.exe (885.3 KB)
Version 1.12 (16-Jul-1998)
MDP3858 Series Modems (V-U/V-E/V-A/V-SA/SP-U/SP-E/SP-A/SP-SA) is featured
to support Voice and SpeakerPhone under TAPI mode ONLY. It does not support
under Non-TAPI mode.
For more information on TAPI, please visit Microsoft Website.
1. The SpeakerPhone feature of this product also works with sound card
and TAD connector. A proper TAD cable connecting the modem and the
sound card through the TAD connectors.
2. The Voice feature of this product is supported through the Answering
Machine. (Playback of greeting message will be heard by the remote
3. Playing of recorded messages requires a sound card.
4. This product is compatible to any Windows 95 platform. I
M Apmlitude (DG Member) on 1-Aug-2004
To get the MDP3858SP-U 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 MDP3858SP-U 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 MDP3858SP-U. It is a software utility which automatically finds and downloads the right driver.
To find the newest driver, you may need to visit the Aztech website. Most major device manufacturers update their drivers regularly.
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.
In 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
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.