Skip to content

In-Build CX11256 modem Driver

Download for Windows — free, fast, always up-to-date

Network Microsoft Windows 10, 8.1, 7, Vista, XP
This driver download is available for Windows PCs.
At a Glance
DeviceIn-Build CX11256 modem
VendorMicrosoft
Supported OSWindows 10, 8.1, 7, Vista, XP
SafetyScanned, malware-free
LicenseFree
No Registration Required Download free — no signup, no account, no waiting
On This Page

The In-Build CX11256 modem driver lets Windows recognize the modem and communicate with it for supported dial-up connections. If you are reinstalling Windows, troubleshooting an unrecognized modem, or restoring connectivity on an older PC, choosing a compatible driver is an important first step. This Microsoft-listed device falls under the Network category, with supported operating systems listed as Windows 10, 8.1, 7, Vista, and XP.

Key Features

  • Windows device recognition: Helps the operating system identify the In-Build CX11256 modem so compatible applications can access it.
  • Dial-up communication support: Provides the software interface needed to use the modem with a compatible telephone line and dial-up service.
  • Device management: Allows Windows to display the modem’s status and driver information in Device Manager, making troubleshooting easier.
  • Compatibility across Windows releases: Offers driver options for the listed operating systems, provided the selected package matches your hardware and Windows architecture.

How to Install In-Build CX11256 modem Driver

  1. Check your system details. Confirm your Windows version and whether it is 32-bit or 64-bit. In Device Manager, check the modem’s hardware IDs if you need to verify the device.
  2. Choose a matching package. Before starting your In-Build CX11256 modem driver download for Windows, review the package’s supported operating systems and hardware details. Select the latest version that explicitly supports your configuration. For Windows 10/11 systems, note that Windows 10 is listed as supported, but Windows 11 compatibility is not confirmed.
  3. Download and prepare the files. If a free download is available, obtain it from a trusted source and extract the archive if necessary. Avoid installers that ask you to add unrelated software.
  4. Install the driver. Run the included setup program, if provided. Alternatively, open Device Manager, right-click the modem or unidentified device, select Update driver, and browse to the extracted driver folder.
  5. Restart and verify. Restart if prompted, then check Device Manager for warning icons. Test the modem using your configured dial-up connection and a working telephone line.

Keep a copy of the working driver before you update, especially on older systems. Check for a compatible release when resolving a specific problem rather than assuming every newer package is suitable. If an update causes trouble, use Device Manager’s Roll Back Driver option when available.

Driver Details

DeviceIn-Build CX11256 modem
VendorMicrosoft
CategoryNetwork
Supported OSWindows 10, 8.1, 7, Vista, XP
PublishedOctober 31, 2026
UpdatedNovember 1, 2026
This driver download is available for Windows PCs.

Report a problem with this driver page