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The In-Build CX11252 modem driver lets Windows recognize the modem and communicate with it for supported dial-up networking functions. If you are reinstalling Windows, troubleshooting an unrecognized modem, or restoring an older computer’s connectivity, the correct driver can help get the device working again.
Listed under Microsoft in the Network category, this device has driver support listed for Windows 10, 8.1, 7, Vista, and XP. Before choosing a package, check that its supported operating system and hardware identifiers match your computer.
Key Features
- Device recognition: Helps Windows identify the In-Build CX11252 modem instead of displaying it as an unknown device.
- Modem communication: Provides the software interface needed for Windows and compatible applications to access supported modem functions.
- Dial-up networking support: Allows compatible Windows networking tools to use the modem with an appropriate telephone connection and service.
- Reinstallation support: Helps restore the driver configuration after a Windows reinstall or removal of an existing driver.
How to Install In-Build CX11252 modem Driver
- Confirm your device and Windows version. Open Device Manager, find the modem or unknown device, and check Properties > Details > Hardware Ids. Also confirm whether your Windows installation is 32-bit or 64-bit.
- Select a compatible package. When choosing an In-Build CX11252 modem driver download for Windows, match the package to your hardware and operating system. For Windows 10/11 systems, note that Windows 11 is not included in the listed support; do not assume a Windows 10 driver will work.
- Download and prepare the files. Use a trusted source for any free download, scan the files, and extract the archive if necessary. Choose the latest version that explicitly supports your configuration.
- Install the driver. Run the included installer, if available. Otherwise, right-click the device in Device Manager, select Update driver, and browse to the extracted driver folder.
- Restart and verify. Restart if prompted, then check Device Manager for warning icons. Test the modem using your dial-up connection settings and a suitable telephone line.
Keep the driver updated when a compatible update addresses a problem or improves reliability. Check Windows Update and trusted support sources, but avoid replacing a working driver solely because another package has a higher version number. Compatibility matters more than installing the newest available file.
Driver Details
| Device | In-Build CX11252 modem |
|---|---|
| Vendor | Microsoft |
| Category | Network |
| Supported OS | Windows 10, 8.1, 7, Vista, XP |
| Published | October 31, 2026 |
| Updated | November 1, 2026 |