The ASMedia USB3 0 Extensible Host Controller driver allows Windows to communicate with the ASMedia USB 3.0 controller built into your motherboard or expansion card. It helps connected USB devices operate correctly, including external drives, keyboards, and compatible USB audio equipment. Although sometimes listed under Audio, this device is a USB host controller rather than a dedicated sound device.

Key Features

• USB controller recognition: Helps Windows identify the controller and manage the USB ports connected to it.
• USB 3.0 connectivity: Enables supported SuperSpeed connections when used with compatible devices, cables, and ports. Actual transfer speeds depend on the complete hardware setup.
• Peripheral support: Provides the controller-level connection used by USB storage, input devices, and other peripherals; some devices may also require their own drivers.
• Connection and power management: Works with Windows to handle device detection, data transfers, and supported power-saving functions. A suitable driver may help resolve controller-related errors or unreliable connections.

How to Install

1. Identify your controller and Windows version. Open Device Manager and expand “Universal Serial Bus controllers.” Check the ASMedia controller’s properties and, if needed, its hardware IDs. Confirm whether your Windows installation is 32-bit or 64-bit.

1. Choose a compatible driver package. For Windows 11, 10, 8, or 7, verify that the download explicitly supports your controller model and operating system. Support varies by hardware revision and driver release; Windows may already provide a suitable built-in driver.

1. Prepare for the update. Save your work and safely disconnect external storage attached to the affected ports. Extract the downloaded archive if necessary. Updating the controller can temporarily interrupt connected USB devices.

1. Install the driver. Run the included setup program and follow its instructions. If the package contains driver files without an installer, right-click the controller in Device Manager, select “Update driver,” and browse to the extracted folder.

1. Restart and test the connection. Restart Windows if prompted, then check Device Manager for warning icons. Reconnect a USB device to a port managed by the ASMedia controller and confirm that it is detected and functions normally.

If installation fails or connectivity becomes worse, use “Roll Back Driver” in the controller’s properties when available, or obtain the recommended package from your motherboard or expansion-card manufacturer.

Common Issues and Fixes

• Install fails or rolls back: Run the installer as administrator, uninstall any existing ASMedia USB 3.0 host controller driver first, reboot, then install the package matching your Windows version and architecture.
• Device not detected: Confirm xHCI/USB 3.0 is enabled in BIOS/UEFI, try a rear motherboard port, reseat the USB device, and use Device Manager > Scan for hardware changes.
• Version conflicts: Remove duplicate or older ASMedia USB host controllers in Device Manager, roll back if a new driver breaks ports, and use the OEM motherboard/laptop package rather than mixing generic and vendor drivers. Reboot after changes.