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diff --git a/usb/common/audio/AUDEndpointDescriptor.h b/usb/common/audio/AUDEndpointDescriptor.h
new file mode 100644
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+++ b/usb/common/audio/AUDEndpointDescriptor.h
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+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !!!Purpose
+///
+/// Re-definition of the standard USB endpoint descriptor with two additional
+/// fields. This is required by the USB audio 1.00 specification.
+///
+/// !!!Usage
+///
+/// -# Declare an AUDEndpointDescriptor instance as part of the configuration
+///    descriptors of an USB %audio %device.
+//------------------------------------------------------------------------------
+
+#ifndef AUDENDPOINTDESCRIPTOR_H
+#define AUDENDPOINTDESCRIPTOR_H
+
+//------------------------------------------------------------------------------
+//         Types
+//------------------------------------------------------------------------------
+
+#ifdef __ICCARM__          // IAR
+#pragma pack(1)            // IAR
+#define __attribute__(...) // IAR
+#endif                     // IAR
+
+//------------------------------------------------------------------------------
+/// Modified endpoint descriptor with two additional fields, with are
+/// USB audio specific.
+//------------------------------------------------------------------------------
+typedef struct {
+
+   /// Size of the descriptor in bytes.
+   unsigned char bLength;
+   /// Descriptor type (USBGenericDescriptor_ENDPOINT).
+   unsigned char bDescriptorType;
+   /// Address and direction of the endpoint.
+   unsigned char bEndpointAddress;
+   /// Endpoint type and additional characteristics (for isochronous endpoints).
+   unsigned char bmAttributes;
+   /// Maximum packet size (in bytes) of the endpoint.
+   unsigned short wMaxPacketSize;
+   /// Polling rate of the endpoint.
+   unsigned char bInterval;
+   /// Refresh rate for a feedback endpoint.
+   unsigned char bRefresh;
+   /// Address of the associated feedback endpoint if any.
+   unsigned char bSyncAddress;
+                                   
+} __attribute__ ((packed)) AUDEndpointDescriptor; // GCC
+
+#ifdef __ICCARM__          // IAR
+#pragma pack()             // IAR
+#endif                     // IAR
+
+#endif //#ifndef AUDENDPOINTDESCRIPTOR_H
+