USB Multi-Interface Driver for Windows
Features Supported Platforms Demo Documentation Prices
The USB Multi-Interface driver is a replacement driver for the system provided Multi-Interface driver. This driver was developed to overcome some bugs that are included in the build in driver and to introduce new features. The driver is compatible to the system provided Multi-Interface driver. If the driver is installed on a system, it does not automatically replace the system provided driver. It exists parallel to the system driver and is assigned to a device during the installation process.
USB Multi-Interface Driver
The driver has a private programming interface. This interface can be used to get Plug and Play notifications, to get descriptors from the device, to communicate with the device independent of the installed functional drivers via endpoint 0 and to switch USB configurations of a multi-configuration device. This interface is useful e.g. for DFU devices to send the DFU start command or to perform any additional communication with a device that exports only class compliant interfaces.
Furthermore the concept of supporting different USB configurations overcomes possible problems with a limited number of endpoints.
The switching between the configurations can be performed with standard user rights and allows the usage of different drivers in each configuration.
The driver is full compliant to the Interface Association Descriptor and it groups the interfaces of a lot of device classes correctly. If a IAD is provided by the device the IAD is used.
Different as the system provided driver this driver accepts the USB Cycle Port request. This enables a class driver to force a re-enumeration as required by the DFU specification.
USB Multi-Interface Driver Features
- Supports multi-configuration and/or multi-interface devices
- Supports a lot of classes, CDC/ACM (Virtual COM), Video, HID, Printer, Mass Storage, DFU, and other.
- Supports low-speed, full-speed, high-speed mode
- Supports switching between USB configurations
- Win32 programming interface for use in C and C++ programs
- Supports Plug&Play and power management
- Supports Plug&Play notifications for applications
- Allows vendor- and product-specific adaptations
- Supports Interface Association Descriptor
- Compatible to the Microsoft's Multi-Interface driver
- Supports Windows 2000, Windows XP x86, Windows XP x64, Windows Server 2003, Windows XP embedded, Windows Vista x86, Windows Vista x64, Windows 7 x86, Windows 7 x64
- Design and implementation complies with the Windows Driver Model (WDM). The driver is certified by Microsoft Windows Hardware Quality Labs (WHQL).
Free Demo
The demo version is time-limited but has full functionality. After the device is connected the driver can be used for 4 hours, then the driver disables itself and the computer must be rebooted in order to use the demo again. The demo package includes the driver and the documentation.
Current Version: 1.12
Download USB Multi-Interface Driver Demo
Documentation
USB Multi-Interface Driver Product Sheet 
USB Multi-Interface Driver Reference Manual
Licensing Conditions and Prices
USB Multi-Interface Driver Software License Agreement
USB Multi-Interface Driver Prices
USB Multi-Interface Driver Order Form
USB Multi-Interface Driver Update Order Form
USB Vendor and Product ID
When designing a USB device you need an official USB vendor ID (VID) which is unique world-wide. Vendor ID's will be assigned by the USB Implementers Forum (www.usb.org). There is a fee of $1500 US.
Thesycon owns a USB vendor ID and provides a subset of product ID's (PID) to customers who licensed our USB software.
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