The Agere Systems AC97 Modem driver allows Windows to communicate with the computer’s built-in dial-up modem. It supports the connection between compatible modem hardware and applications used for telephone-line internet access or faxing. Before installing it on Windows 11, 10, 8, or 7, check that the specific driver package supports your hardware and Windows version, as compatibility can vary with older AC97 devices.

Key Features

• Modem recognition: Helps Windows identify the Agere Systems AC97 Modem correctly rather than displaying it as an unknown device or an unconfigured communications controller.
• Dial-up connectivity: Provides the software interface needed to establish connections over a compatible analog telephone line using an active dial-up service.
• Application communication: Enables compatible communications software to access the modem for supported tasks, such as faxing, where available on the installed hardware.
• Device configuration: Makes modem settings and diagnostic options accessible through Windows tools, helping you check device status and troubleshoot connection problems.

How to Install

1. Confirm the modem and system details. Open Device Manager and locate the modem or unidentified communications device. Check its hardware IDs under Properties > Details, then confirm your Windows version and whether your system is 32-bit or 64-bit.

1. Choose a matching driver package. Download a driver that explicitly supports your hardware ID and operating system. Do not assume that a package intended for Windows 7 will also work on Windows 8, 10, or 11. Manufacturer-provided compatibility information is especially important for this older modem.

1. Extract and install the driver. If the download is compressed, extract it to a folder. Run the included installer if one is provided, and follow the prompts. Alternatively, right-click the device in Device Manager, select Update driver, and choose Browse my computer for drivers to locate the extracted files.

1. Restart and verify recognition. Restart the computer if prompted, then return to Device Manager. Confirm that the modem appears without a warning icon. If Windows rejects the package, check compatibility rather than disabling driver-signature protections.

1. Configure and test the connection. Connect a suitable analog telephone line and enter your dial-up provider’s settings or configure compatible fax software. A successful driver installation does not supply telephone service, and this modem does not replace an Ethernet or Wi-Fi adapter.

Common Issues and Fixes

• Install fails or rolls back: Old Agere AC97 modem packages often reject newer Windows or 64-bit systems. Run the installer as administrator in compatibility mode for the driver’s original Windows version, or update manually in Device Manager via “Update driver” > “Browse” > “Let me pick.”
• Modem not detected: Confirm the onboard AC97 modem is enabled in BIOS/UEFI, install the motherboard chipset/AC97 controller driver first, then scan for hardware changes. Check Device Manager for an unknown PCI/AC97 device.
• Version or COM-port conflicts: Remove older Agere or Microsoft modem entries, restart, and allow only one driver to install. Match the driver to Windows version and bitness, and avoid forcing a different Agere model’s INF or COM port.