diff --git a/module_dfu/src/dfu.xc b/module_dfu/src/dfu.xc
index 34985cc9..9c96b262 100644
--- a/module_dfu/src/dfu.xc
+++ b/module_dfu/src/dfu.xc
@@ -2,6 +2,7 @@
 #include <platform.h>
 #include "devicedefines.h"
 
+#ifndef NO_USB
 #include "xud.h"
 #include "usb_std_requests.h"
 
@@ -580,4 +581,4 @@ int DFUDeviceRequests(XUD_ep ep0_out, XUD_ep &?ep0_in, USB_SetupPacket_t &sp, ch
     }
   	return returnVal;
 }
-
+#endif /* NO_USB */
diff --git a/module_usb_audio/audio_io/audio_io.xc b/module_usb_audio/audio_io/audio_io.xc
index 198ec462..023eb391 100755
--- a/module_usb_audio/audio_io/audio_io.xc
+++ b/module_usb_audio/audio_io/audio_io.xc
@@ -1048,8 +1048,10 @@ void SpdifTxWrapper(chanend c_spdif_tx)
 /* This function is a dummy version of the deliver thread that does not
    connect to the codec ports. It is used during DFU reset. */
 
+#if DFU
 [[distributable]]
 void DFUHandler(server interface i_dfu i, chanend ?c_user_cmd);
+#endif
 
 #pragma select handler
 void testct_byref(chanend c, int &returnVal)
diff --git a/module_usb_audio/audio_io/xua_audio.h b/module_usb_audio/audio_io/xua_audio.h
index 0f7726b5..ee3fc213 100644
--- a/module_usb_audio/audio_io/xua_audio.h
+++ b/module_usb_audio/audio_io/xua_audio.h
@@ -3,7 +3,9 @@
 
 #if __XC__
 
+#ifndef NO_USB
 #include "dfu_interface.h"
+#endif
 
 typedef interface audManage_if
 {
diff --git a/module_usb_audio/endpoint0/audiorequests.xc b/module_usb_audio/endpoint0/audiorequests.xc
index e8691e50..8a19d5e0 100644
--- a/module_usb_audio/endpoint0/audiorequests.xc
+++ b/module_usb_audio/endpoint0/audiorequests.xc
@@ -2,7 +2,7 @@
  * @brief   Implements relevant requests from the USB Audio 2.0 Specification
  * @author  Ross Owen, XMOS Semiconductor
  */
-
+#ifndef NO_USB
 #include <xs1.h>
 #include "xud.h"
 #include "usb_std_requests.h"
@@ -1282,4 +1282,4 @@ XUD_Result_t AudioClassRequests_1(XUD_ep ep0_out, XUD_ep ep0_in, USB_SetupPacket
     return XUD_RES_ERR;
 }
 #endif
-
+#endif /* NO_USB */
diff --git a/module_usb_audio/endpoint0/endpoint0.c b/module_usb_audio/endpoint0/endpoint0.c
index a675fabf..c2cc21e2 100755
--- a/module_usb_audio/endpoint0/endpoint0.c
+++ b/module_usb_audio/endpoint0/endpoint0.c
@@ -7,6 +7,7 @@
 #include <safestring.h>
 #include <stddef.h>
 
+#ifndef NO_USB
 #include "xud.h"                 /* XUD user defines and functions */
 #include "usb_std_requests.h"
 #include "usbaudio20.h"          /* Defines from USB Audio 2.0 spec */
@@ -801,3 +802,4 @@ void Endpoint0(chanend c_ep0_out, chanend c_ep0_in, chanend c_audioControl,
         }
     }
 }
+#endif /* NO_USB */
diff --git a/module_usb_audio/endpoint0/vendorrequests.c b/module_usb_audio/endpoint0/vendorrequests.c
index e9361702..b1829f6a 100644
--- a/module_usb_audio/endpoint0/vendorrequests.c
+++ b/module_usb_audio/endpoint0/vendorrequests.c
@@ -1,4 +1,4 @@
-
+#ifndef NO_USB
 
 #include "xud.h"
 #include "vendorrequests.h"
@@ -31,3 +31,4 @@ void VendorRequests_Init(VENDOR_REQUESTS_PARAMS_DEC)
 
 }
 
+#endif /* NO_USB */
diff --git a/module_usb_audio/flashlib_user.c b/module_usb_audio/flashlib_user.c
index 834adee7..ce862964 100644
--- a/module_usb_audio/flashlib_user.c
+++ b/module_usb_audio/flashlib_user.c
@@ -1,8 +1,6 @@
+#ifdef DFU
 #include "devicedefines.h"
 #include "uac_hwresources.h"
-
-#ifdef DFU
-
 #include <xs1.h>
 #include <xclib.h>
 #ifdef QUAD_SPI_FLASH
diff --git a/module_usb_audio/main.xc b/module_usb_audio/main.xc
index 2d46bddf..a8553744 100755
--- a/module_usb_audio/main.xc
+++ b/module_usb_audio/main.xc
@@ -12,11 +12,13 @@
 #include <xscope.h>
 #endif
 
+#ifndef NO_USB
 #include "xud.h"                 /* XMOS USB Device Layer defines and functions */
+#include "endpoint0.h"
+#endif
 
 #include "devicedefines.h"       /* Device specific defines */
 #include "uac_hwresources.h"
-#include "endpoint0.h"
 #include "usb_buffer.h"
 #include "decouple.h"
 #ifdef MIDI
@@ -48,8 +50,10 @@
 #include "xua_pdm_mic.h"
 #endif
 
+#ifdef DFU
 [[distributable]]
 void DFUHandler(server interface i_dfu i, chanend ?c_user_cmd);
+#endif
 
 /* Audio I/O - Port declarations */
 #if I2S_WIRES_DAC > 0
@@ -209,7 +213,7 @@ on tile [IAP_TILE] : struct r_i2c r_i2c = {PORT_I2C_SCL, PORT_I2C_SDA};
 #endif
 #endif
 
-
+#ifndef NO_USB
 /* Endpoint type tables for XUD */
 XUD_EpType epTypeTableOut[ENDPOINT_COUNT_OUT] = { XUD_EPTYPE_CTL | XUD_STATUS_ENABLE,
                                             XUD_EPTYPE_ISO,    /* Audio */
@@ -249,7 +253,7 @@ XUD_EpType epTypeTableIn[ENDPOINT_COUNT_IN] = { XUD_EPTYPE_CTL | XUD_STATUS_ENAB
 #endif
 #endif
                                         };
-
+#endif /* NO_USB */
 
 void thread_speed()
 {
@@ -270,6 +274,7 @@ void xscope_user_init()
 }
 #endif
 
+#ifndef NO_USB
 /* Core USB Audio functions - must be called on the Tile connected to the USB Phy */
 void usb_audio_core(chanend c_mix_out
 #ifdef MIDI
@@ -402,6 +407,7 @@ VENDOR_REQUESTS_PARAMS_DEC_
         //:
     }
 }
+#endif /* NO_USB */
 
 void usb_audio_io(chanend c_aud_in, chanend ?c_adc,
 #if defined(SPDIF_TX) && (SPDIF_TX_TILE != AUDIO_IO_TILE)
diff --git a/module_usb_audio/reboot.xc b/module_usb_audio/reboot.xc
index 461a8e95..d8ab2ef4 100644
--- a/module_usb_audio/reboot.xc
+++ b/module_usb_audio/reboot.xc
@@ -2,11 +2,12 @@
 #include <platform.h>
 #include <xs1_su.h>
 
-#include "xud.h"
-
 #define XS1_SU_PERIPH_USB_ID 0x1
 
-#if (XUD_SERIES_SUPPORT == XUD_X200_SERIES)
+//Normally we would enumerate the XUD_SERIES_SUPPORT possibilities using defines in 
+//xud.h but we have hard coded them to remove dependancy of sc_xud
+
+#if (XUD_SERIES_SUPPORT == 4)
 #include "xs2_su_registers.h"
 #define XS2_SU_PERIPH_USB_ID 0x1
 #define PLL_MASK 0x7FFFFFFF
@@ -21,7 +22,7 @@ extern tileref tile[];
 
 void device_reboot_aux(void)
 {
-#if (XUD_SERIES_SUPPORT == XUD_U_SERIES)
+#if (XUD_SERIES_SUPPORT == 1)
     /* Disconnect from bus */
     unsigned data[] = {4};
     write_periph_32(usb_tile, XS1_SU_PERIPH_USB_ID, XS1_SU_PER_UIFM_FUNC_CONTROL_NUM, 1, data);
@@ -35,7 +36,7 @@ void device_reboot_aux(void)
     unsigned int tileId;
     unsigned int tileArrayLength;
 
-#if (XUD_SERIES_SUPPORT == XUD_X200_SERIES)
+#if (XUD_SERIES_SUPPORT == 4)
     /* Disconnect from bus */  
     unsigned data[] = {4};  
     write_periph_32(usb_tile, XS2_SU_PERIPH_USB_ID, XS1_GLX_PER_UIFM_FUNC_CONTROL_NUM, 1, data);  
diff --git a/module_usb_audio/uac_hwresources.h b/module_usb_audio/uac_hwresources.h
index 13d1da2a..bf3c6c91 100644
--- a/module_usb_audio/uac_hwresources.h
+++ b/module_usb_audio/uac_hwresources.h
@@ -2,7 +2,9 @@
 #ifndef _UAC_HWRESOURCES_H_
 #define _UAC_HWRESOURCES_H_
 
+#ifndef NO_USB
 #include "xud.h"                 /* XMOS USB Device Layer defines and functions */
+#endif
 
 #if ((XUD_SERIES_SUPPORT != XUD_U_SERIES) && (XUD_SERIES_SUPPORT != XUD_X200_SERIES))
 
diff --git a/module_usb_audio/usb_buffer/decouple.xc b/module_usb_audio/usb_buffer/decouple.xc
index 7bf378db..3ad34c28 100644
--- a/module_usb_audio/usb_buffer/decouple.xc
+++ b/module_usb_audio/usb_buffer/decouple.xc
@@ -1,3 +1,4 @@
+#ifndef NO_USB
 #include <xs1.h>
 #include "xc_ptr.h"
 #include "devicedefines.h"
@@ -1019,4 +1020,4 @@ void decouple(chanend c_mix_out
 #endif /* NUM_USB_CHAN_IN > 0 */
     }
 }
-
+#endif /* NO_USB */
\ No newline at end of file
diff --git a/module_usb_audio/usb_buffer/decouple_interrupt.c b/module_usb_audio/usb_buffer/decouple_interrupt.c
index ef3e78f1..0e026740 100644
--- a/module_usb_audio/usb_buffer/decouple_interrupt.c
+++ b/module_usb_audio/usb_buffer/decouple_interrupt.c
@@ -1,3 +1,5 @@
+#ifndef NO_USB
 #include <interrupt.h>
 
 register_interrupt_handler(handle_audio_request, 1, 200)
+#endif
\ No newline at end of file
diff --git a/module_usb_audio/usb_buffer/get_adc_counts.c b/module_usb_audio/usb_buffer/get_adc_counts.c
index 1c0f46b1..a286c1d1 100644
--- a/module_usb_audio/usb_buffer/get_adc_counts.c
+++ b/module_usb_audio/usb_buffer/get_adc_counts.c
@@ -1,3 +1,4 @@
+#ifndef NO_USB
 #include "xud.h"
 
 extern XUD_BusSpeed_t g_curUsbSpeed;
@@ -48,3 +49,5 @@ void GetADCCounts(unsigned samFreq, int *min, int *mid, int *max)
     }
 
 }
+#endif /* NO_USB */
+
diff --git a/module_usb_audio/usb_buffer/usb_buffer.xc b/module_usb_audio/usb_buffer/usb_buffer.xc
index 3335c8c5..79d9fe36 100644
--- a/module_usb_audio/usb_buffer/usb_buffer.xc
+++ b/module_usb_audio/usb_buffer/usb_buffer.xc
@@ -1,4 +1,4 @@
-
+#ifndef NO_USB
 #include <xs1.h>
 #include <print.h>
 
@@ -957,3 +957,4 @@ void buffer(register chanend c_aud_out, register chanend c_aud_in,
 
     }
 }
+#endif /* NO_USB */
\ No newline at end of file
diff --git a/module_usb_audio/xuduser/xuduser.c b/module_usb_audio/xuduser/xuduser.c
index 5df5f90e..f7259bb3 100644
--- a/module_usb_audio/xuduser/xuduser.c
+++ b/module_usb_audio/xuduser/xuduser.c
@@ -1,4 +1,4 @@
-
+#ifndef NO_USB
 #include "devicedefines.h"
 #include "hostactive.h"
 #include "audiostream.h"
@@ -22,3 +22,4 @@ void XUD_UserResume(void)
         UserHostActive(1);
     }
 }
+#endif /* NO_USB */
\ No newline at end of file