The ATI I O Communications Processor USB 2.0 EHCI controller driver helps Windows communicate with the USB 2.0 host controller built into compatible ATI chipsets. It supports connections to USB peripherals such as external drives, printers, and input devices. Although ATI is widely associated with graphics hardware, this controller handles USB connectivity rather than graphics processing.

Key Features

• USB 2.0 communication: Enables compatible high-speed USB devices to communicate through the controller, subject to the limits of the connected hardware.
• Controller identification: Helps Windows recognize and configure the EHCI controller correctly in Device Manager.
• Peripheral connectivity: Provides the controller-level support needed for USB accessories; some peripherals may also require their own drivers.
• Windows driver integration: Works with the operating system’s USB components. For Windows 11, 10, 8, or 7, availability and compatibility depend on the chipset, hardware ID, and driver package—not just the device name.

How to Install

1. Identify the controller. Open Device Manager and check under Universal Serial Bus controllers or Other devices. In the controller’s Properties window, select Details, then Hardware Ids to confirm which hardware you have.

1. Check the package requirements. Choose a driver that explicitly matches your hardware and Windows version, including whether your system is 32-bit or 64-bit. Older ATI chipset packages may not support newer Windows releases, so do not assume a Windows 7 driver will work on Windows 10 or 11.

1. Prepare for installation. Save your work and create a restore point if System Protection is enabled. Safely eject USB storage devices before making changes, as controller updates can temporarily interrupt USB connections.

1. Install the compatible driver. If the package includes an installer, follow its instructions. Otherwise, extract the files, right-click the controller in Device Manager, choose Update driver, and select Browse my computer for drivers to locate the extracted folder.

1. Restart and verify operation. Restart Windows if prompted, then check that the controller has no warning symbol in Device Manager. Test a USB peripheral afterward. If Windows already supplies a working driver, a separate ATI package may not be necessary; check Windows Update or your computer manufacturer’s support resources before replacing it.

Common Issues and Fixes

• Install fails with “driver not intended for this device” or unsigned-driver error: The ATI I/O Communications Processor USB 2.0 EHCI controller needs the matching ATI chipset/INF package, not a generic USB driver. Check the PCI hardware ID, run the installer as administrator, and use a signed WHQL package.
• Device not detected / yellow bang / Code 43: Enable EHCI hand-off and USB legacy support in BIOS, install chipset drivers first, then rescan Device Manager. Try a rear USB port and avoid hubs during first install.
• Version conflict with Microsoft’s Enhanced Host Controller or an older ATI package: Uninstall the existing USB EHCI controller and driver software, reboot, and install the correct ATI/AMD chipset driver. If Code 10 persists, roll back to the previous working driver.