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HDAUDIO Soft Data Fax Modem with SmartCP Driver

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This driver download is available for Windows PCs.
At a Glance
DeviceHDAUDIO Soft Data Fax Modem with SmartCP
VendorConexant
Supported OSWindows
VersionLatest
File Size—
UpdatedOct 29, 2026
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The HDAUDIO Soft Data Fax Modem with SmartCP driver gives Windows the software interface needed to recognize and operate this integrated soft modem. It restores dial-up data, fax transmission, and audio modem signaling while preventing common Device Manager errors on supported Windows platforms. Whether you are using Windows 11, Windows 10, Windows 8, or Windows 7, this driver helps the modem communicate with the operating system properly.

Key Features

  • Activates SmartCP functionality so the soft modem can process fax and dial-up sessions without relying on a dedicated controller.
  • Provides HDAUDIO bus enumeration for proper detection under sound and modem categories in Device Manager.
  • Clears common device conflicts such as Code 10 or missing driver warnings for the HDAUDIO Soft Data Fax Modem with SmartCP.
  • Optimizes audio routing for modem tones and voice tasks while supporting both 32-bit and 64-bit Windows editions.

How to Install

  1. Download the driver package and extract its contents to a folder you can easily access.
  2. Open Device Manager, then find the HDAUDIO Soft Data Fax Modem with SmartCP entry, often listed under “Modems” or “Other devices.”
  3. Right-click the device and select “Update driver,” then choose “Browse my computer for drivers.”
  4. Select the extracted folder and let Windows install the correct driver; if a setup file is included, run it as administrator instead.
  5. Restart the computer and confirm the device appears without a yellow warning icon, then test a fax or dial-up operation.

Common Issues and Fixes

  • Install fails or rolls back: Legacy SmartCP packages often need administrator rights and Windows compatibility mode. Run the vendor installer as administrator, allow unsigned/legacy drivers if prompted, and reboot before retrying.
  • Device not detected: Confirm the modem is enabled in BIOS/UEFI and appears under Device Manager > Modems (or show hidden devices). Run Scan for hardware changes; if absent, reseat the modem/riser and check the HDAUDIO link.
  • Version conflicts or Code 10/28: Remove any existing Soft Data Fax Modem/SmartCP driver and delete its driver package, reboot, then install the exact 32-/64-bit vendor version. Avoid mixing Windows Update and vendor packages.

Driver Details

DeviceHDAUDIO Soft Data Fax Modem with SmartCP
VendorConexant
CategoryNetwork
Supported OSWindows
PublishedOctober 28, 2026
UpdatedOctober 29, 2026
This driver download is available for Windows PCs.