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---
topic: sample
description: "Demonstrates how to extend the WpdHelloWorldDriver for a device that supports multiple transports."
languages:
- cpp
products:
- windows
---
<!---
name: WPD multi-transport sample driver
platform: UMDF1
language: cpp
category: WPD
description: Demonstrates how to extend the WpdHelloWorldDriver for a device that supports multiple transports.
samplefwlink: http://go.microsoft.com/fwlink/p/?LinkId=618009
--->
# WPD multi-transport sample driver
The WpdMultiTransportDriver sample demonstrates how you could extend the WpdHelloWorldDriver for a device that supports multiple transports. A transport is a protocol over which a portable device communicates with a computer. Example transports include Internet Protocol (IP), Bluetooth, and USB.
A number of portable devices now support multiple transports. For example, a number of cell phones support both Bluetooth and USB. Windows supports a multitransport driver model that ensures that only one node appears for each device.
For a complete description of this sample and its underlying code and functionality, refer to the [WPD MultiTransport Driver](http://msdn.microsoft.com/en-us/library/windows/hardware/ff597709) description in the Windows Driver Kit documentation.
## Related topics
[WPD Design Guide](http://msdn.microsoft.com/en-us/library/windows/hardware/ff597864)
[WPD Driver Development Tools](http://msdn.microsoft.com/en-us/library/windows/hardware/ff597568)
[WPD Programming Guide](https://msdn.microsoft.com/en-us/library/windows/hardware/ff597898)
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