-                       USB_Descriptor_Configuration_Header_t    Config;
-                       USB_Descriptor_Interface_t               RelayBoardInterface;
-               } RelayBoard_USB_Descriptor_Configuration_t;
+                       USB_Descriptor_Configuration_Header_t Config;
+
+                       // Relay Board Interface
+                       USB_Descriptor_Interface_t            RelayBoardInterface;
+               } USB_Descriptor_Configuration_t;
+
+               /** Enum for the device interface descriptor IDs within the device. Each interface descriptor
+                *  should have a unique ID index associated with it, which can be used to refer to the
+                *  interface from other descriptors.
+                */
+               enum InterfaceDescriptors_t
+               {
+                       INTERFACE_ID_RelayBoard = 0, /**< Relay board interface descriptor ID */
+               };
+
+               /** Enum for the device string descriptor IDs within the device. Each string descriptor should
+                *  have a unique ID index associated with it, which can be used to refer to the string from
+                *  other descriptors.
+                */
+               enum StringDescriptors_t
+               {
+                       STRING_ID_Language     = 0, /**< Supported Languages string descriptor ID (must be zero) */
+                       STRING_ID_Manufacturer = 1, /**< Manufacturer string ID */
+                       STRING_ID_Product      = 2, /**< Product string ID */
+                       STRING_ID_Serial       = 3, /**< Serial number string ID */
+               };