1. Drivers Uassoft Input Devices Device
  2. Drivers Uassoft Input Devices Input


  • Description of MUTT devices
  • The manufactures listed in this section sell MUTT hardware boards required to run interoperability tests.
  • the MUTT software package to get the latest version of the test tools.
  1. How to Change Default Sound Input Device in Windows 10 The default sound input device is the device that Windows uses to record or hear sound. When you connect more than one microphone or other recording devices to your PC, you can select which device you want to use by default. This tutorial will show you different ways to change the default.
  2. In Internet Explorer, click Tools, and then click Internet Options. On the Security tab, click the Trusted Sites icon. Click Sites and then add these website addresses one at a time to the list: You can only add one address at a time and you must click Add after each one.
  3. In Device Manager, expand DVD/CD-ROM drives, right-click the CD and DVD devices, and then select Uninstall. When you are prompted to confirm that you want to remove the device, select OK. Restart the computer. After the computer restarts, the drivers will be automatically installed. If your problem is not solved, try the next method.

The device's wave port and miniport drivers appear at the lower-right corner of the figure. As shown in the figure, the port driver receives as input the stream from the miniport driver and outputs it either directly to the user-mode DirectSound component, Dsound.dll, or indirectly through KMixer. The drivers stay, yes. But the devices do not (at least not visable in the device manager). The registry keeps track of devices and their device id# anytime something is connected/installed. Under WinOS normal mode, old devices shouldn't be showing in the device manager, that is not normal at all.

The Microsoft USB Test Tool (MUTT) is collection of devices for testing interoperability of your USB hardware with the Microsoft USB driver stack. This section provides a brief overview of the different types of MUTT devices, the tests you can run by using the device, and suggests topologies for controller, hub, device, and BIOS/UEFI testing.

To communicate with MUTT devices, you need the MUTT software package. This package contains several test tools and drivers that let hardware test engineers test interoperability of their USB controller or hub with the Microsoft USB driver stack. The test tools validate USB host controller software, hardware (including firmware) and any USB hub that is installed between the host controller and the device.

How to get MUTT devices


JJG Technologies

JJG Technologies


JJG Technologies

SuperMUTT Pack
VIA Labs

JJG Technologies



  • Based on the design of the CY3681 EZ-USB FX2 Development Kit (Cypress FX2).

  • Compatible with FX2 capabilities, such as high speed and full speed transfers to bulk, isochronous, control, interrupt endpoints.

  • Simulates traffic from USB 2.0 devices.


The MUTT Pack is a combination of a USB 2.0 hub and an FX2 device that controls the hub and acts as a downstream device.

  • Based on the design on the Cypress Hub and Cypress FX2.

  • Hub capabilities. This can operate as a multi-TT or single-TT high speed hub; simulates overcurrent.

  • Exposes a downstream port that can be turned on or off.

  • Simulates USB 2.0 hub behavior.

  • Can operate in self-powered or bus-powered modes.

The MUTT Pack has two USB connectors. The standard B connector is used to plug the MUTT Pack in to the host system. The standard A connector is downstream of the embedded hub on the MUTT Pack, and can be used for additional device testing (discussed later in this document).

How to power the MUTT Pack

The MUTT Pack uses a small jumper (see Figure 3) to switch between self-powered and bus-powered modes. In bus-powered mode, the USB bus of the host system powers the MUTT Pack. In self-powered mode, the MUTT Pack is powered with an external 5V power adapter.

Use the following flow chart to determine how to power the MUTT Pack:


Do not use the MUTT Pack without the power jumper.

This image shows how to use the jumper for powering the MUTT Pack by the USB bus of the host system:

This image shows how to use the jumper for powering the MUTT pack with an external power adapter:

Note Disconnect any existing power adapters and the cable to the host system when you are changing the jumper on the MUTT Pack.


  • Based on the design of FX3 EZ-USB FX3.

  • Implements SuperSpeed features such as the bulk streams feature.

  • Simulates USB 3.0 device traffic.

  • Note: this device does not support operation at Low Speed.

SuperMUTT Pack

The SuperMUTT Pack is two devices in one. It is a USB 3.0 hub with a Cypress FX2 device downstream. The device controls the hub and also acts as a downstream device. The SuperMUTT Pack simulates USB 3.0 hub behaviors.

Drivers Uassoft Input Devices Device

Note The downstream device is a 2.0 device, not a USB 3.0 device.


The DR MUTT acts like a SuperMutt when testing host mode of the device under test, but it can also switch to host mode to test the function mode of the device under test.

Drivers Uassoft Input Devices Input

USB Type-C ConnEx

The USB Type-C Connection Exerciser (USB Type-C ConnEx) is a custom shield that has a four-to-one switch to automate USB Type-C interoperability scenarios. The shield has been designed to work with Arduino as the microcontroller. For more information, see Test USB Type-C systems with USB Type-C ConnEx.

Related topics

Coments are closed
Scroll to top