diff --git a/Source/Core/Core/CMakeLists.txt b/Source/Core/Core/CMakeLists.txt
index 10a51b4a65..b37c78e309 100644
--- a/Source/Core/Core/CMakeLists.txt
+++ b/Source/Core/Core/CMakeLists.txt
@@ -239,8 +239,7 @@ set(LIBS
 if(LIBUSB_FOUND)
 	# Using shared LibUSB
 	set(LIBS	${LIBS}	${LIBUSB_LIBRARIES})
-	set(SRCS	${SRCS}	IPC_HLE/WII_IPC_HLE_Device_hid.cpp
-	        	       	HW/SI_GCAdapter.cpp)
+	set(SRCS	${SRCS}	IPC_HLE/WII_IPC_HLE_Device_hid.cpp)
 endif(LIBUSB_FOUND)
 
 set(LIBS ${LIBS} ${MBEDTLS_LIBRARIES})
diff --git a/Source/Core/Core/Core.cpp b/Source/Core/Core/Core.cpp
index c49d89c847..0d614c9634 100644
--- a/Source/Core/Core/Core.cpp
+++ b/Source/Core/Core/Core.cpp
@@ -48,9 +48,6 @@
 #include "Core/HW/HW.h"
 #include "Core/HW/Memmap.h"
 #include "Core/HW/ProcessorInterface.h"
-#if defined(__LIBUSB__) || defined(_WIN32)
-#include "Core/HW/SI_GCAdapter.h"
-#endif
 #include "Core/HW/SystemTimers.h"
 #include "Core/HW/VideoInterface.h"
 #include "Core/HW/Wiimote.h"
@@ -65,6 +62,7 @@
 #endif
 
 #include "DiscIO/FileMonitor.h"
+#include "InputCommon/GCAdapter.h"
 #include "InputCommon/ControllerInterface/ControllerInterface.h"
 #include "VideoCommon/OnScreenDisplay.h"
 #include "VideoCommon/VideoBackendBase.h"
@@ -285,7 +283,7 @@ void Stop()  // - Hammertime!
 		g_video_backend->Video_ExitLoop();
 	}
 #if defined(__LIBUSB__) || defined(_WIN32)
-	SI_GCAdapter::ResetRumble();
+	GCAdapter::ResetRumble();
 #endif
 
 #ifdef USE_MEMORYWATCHER
@@ -630,7 +628,7 @@ void SetState(EState _State)
 		CPU::EnableStepping(true);  // Break
 		Wiimote::Pause();
 #if defined(__LIBUSB__) || defined(_WIN32)
-		SI_GCAdapter::ResetRumble();
+		GCAdapter::ResetRumble();
 #endif
 		break;
 	case CORE_RUN:
@@ -741,7 +739,7 @@ bool PauseAndLock(bool doLock, bool unpauseOnUnlock)
 	g_video_backend->PauseAndLock(doLock, unpauseOnUnlock);
 
 #if defined(__LIBUSB__) || defined(_WIN32)
-	SI_GCAdapter::ResetRumble();
+	GCAdapter::ResetRumble();
 #endif
 	return wasUnpaused;
 }
diff --git a/Source/Core/Core/Core.vcxproj b/Source/Core/Core/Core.vcxproj
index 05af583ed2..87f7e52bd4 100644
--- a/Source/Core/Core/Core.vcxproj
+++ b/Source/Core/Core/Core.vcxproj
@@ -148,13 +148,6 @@
     <ClCompile Include="HW\SI_DeviceGCController.cpp" />
     <ClCompile Include="HW\SI_DeviceGCSteeringWheel.cpp" />
     <ClCompile Include="HW\SI_DeviceKeyboard.cpp" />
-    <ClCompile Include="HW\SI_GCAdapter.cpp">
-      <!--
-      Disable "nonstandard extension used : zero-sized array in struct/union" warning,
-      which is hit in libusb.h.
-      -->
-      <DisableSpecificWarnings>4200;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
     <ClCompile Include="HW\Sram.cpp" />
     <ClCompile Include="HW\StreamADPCM.cpp" />
     <ClCompile Include="HW\SystemTimers.cpp" />
@@ -360,7 +353,6 @@
     <ClInclude Include="HW\SI_DeviceGCController.h" />
     <ClInclude Include="HW\SI_DeviceGCSteeringWheel.h" />
     <ClInclude Include="HW\SI_DeviceKeyboard.h" />
-    <ClInclude Include="HW\SI_GCAdapter.h" />
     <ClInclude Include="HW\Sram.h" />
     <ClInclude Include="HW\StreamADPCM.h" />
     <ClInclude Include="HW\SystemTimers.h" />
diff --git a/Source/Core/Core/Core.vcxproj.filters b/Source/Core/Core/Core.vcxproj.filters
index a374defc07..855ee5edcb 100644
--- a/Source/Core/Core/Core.vcxproj.filters
+++ b/Source/Core/Core/Core.vcxproj.filters
@@ -720,9 +720,6 @@
     <ClCompile Include="PowerPC\MMU.cpp">
       <Filter>PowerPC</Filter>
     </ClCompile>
-    <ClCompile Include="HW\SI_GCAdapter.cpp">
-      <Filter>HW %28Flipper/Hollywood%29\SI - Serial Interface</Filter>
-    </ClCompile>
     <ClCompile Include="PowerPC\JitCommon\JitBackpatch.cpp">
       <Filter>PowerPC\JitCommon</Filter>
     </ClCompile>
@@ -1241,9 +1238,6 @@
     <ClInclude Include="HW\GCKeyboard.h">
       <Filter>HW %28Flipper/Hollywood%29\GCKeyboard</Filter>
     </ClInclude>
-    <ClInclude Include="HW\SI_GCAdapter.h">
-      <Filter>HW %28Flipper/Hollywood%29\SI - Serial Interface</Filter>
-    </ClInclude>
     <ClInclude Include="PowerPC\Jit64Common\Jit64AsmCommon.h">
       <Filter>PowerPC\Jit64Common</Filter>
     </ClInclude>
diff --git a/Source/Core/DolphinWX/ControllerConfigDiag.cpp b/Source/Core/DolphinWX/ControllerConfigDiag.cpp
index 149247dd81..85154040ea 100644
--- a/Source/Core/DolphinWX/ControllerConfigDiag.cpp
+++ b/Source/Core/DolphinWX/ControllerConfigDiag.cpp
@@ -26,13 +26,11 @@
 #include "Core/HW/GCKeyboard.h"
 #include "Core/HW/GCPad.h"
 #include "Core/HW/SI.h"
-#if defined(__LIBUSB__) || defined (_WIN32)
-#include "Core/HW/SI_GCAdapter.h"
-#endif
 #include "Core/HW/Wiimote.h"
 #include "Core/HW/WiimoteReal/WiimoteReal.h"
 #include "DolphinWX/ControllerConfigDiag.h"
 #include "DolphinWX/InputConfigDiag.h"
+#include "InputCommon/GCAdapter.h"
 
 #if defined(HAVE_XRANDR) && HAVE_XRANDR
 #include "DolphinWX/X11Utils.h"
diff --git a/Source/Core/DolphinWX/ControllerConfigDiag.h b/Source/Core/DolphinWX/ControllerConfigDiag.h
index f679992b54..7bfc76bca7 100644
--- a/Source/Core/DolphinWX/ControllerConfigDiag.h
+++ b/Source/Core/DolphinWX/ControllerConfigDiag.h
@@ -10,8 +10,8 @@
 
 #include "Common/SysConf.h"
 #include "Core/ConfigManager.h"
-#include "Core/HW/SI_GCAdapter.h"
 #include "Core/HW/Wiimote.h"
+#include "InputCommon/GCAdapter.h"
 
 class InputConfig;
 class wxButton;
diff --git a/Source/Core/InputCommon/CMakeLists.txt b/Source/Core/InputCommon/CMakeLists.txt
index b200625000..254dffce10 100644
--- a/Source/Core/InputCommon/CMakeLists.txt
+++ b/Source/Core/InputCommon/CMakeLists.txt
@@ -3,8 +3,6 @@ set(SRCS	ControllerEmu.cpp
 			ControllerInterface/ControllerInterface.cpp
 			ControllerInterface/Device.cpp
 			ControllerInterface/ExpressionParser.cpp)
-
-
 set(LIBS	common)
 
 if(WIN32)
@@ -37,6 +35,10 @@ elseif(ANDROID)
 				ControllerInterface/Android/Android.cpp)
 endif()
 
+if(LIBUSB_FOUND)
+	set(SRCS	${SRCS}	GCAdapter.cpp)
+endif(LIBUSB_FOUND)
+
 if(LIBEVDEV_FOUND AND LIBUDEV_FOUND)
 	set(SRCS ${SRCS} ControllerInterface/evdev/evdev.cpp)
 	set(LIBS ${LIBS} ${LIBEVDEV_LIBRARY} ${LIBUDEV_LIBRARY})
diff --git a/Source/Core/Core/HW/SI_GCAdapter.cpp b/Source/Core/InputCommon/GCAdapter.cpp
similarity index 100%
rename from Source/Core/Core/HW/SI_GCAdapter.cpp
rename to Source/Core/InputCommon/GCAdapter.cpp
diff --git a/Source/Core/Core/HW/SI_GCAdapter.h b/Source/Core/InputCommon/GCAdapter.h
similarity index 100%
rename from Source/Core/Core/HW/SI_GCAdapter.h
rename to Source/Core/InputCommon/GCAdapter.h
diff --git a/Source/Core/InputCommon/InputCommon.vcxproj b/Source/Core/InputCommon/InputCommon.vcxproj
index 347c06e770..3e63243949 100644
--- a/Source/Core/InputCommon/InputCommon.vcxproj
+++ b/Source/Core/InputCommon/InputCommon.vcxproj
@@ -52,6 +52,13 @@
     <ClCompile Include="ControllerInterface\ExpressionParser.cpp" />
     <ClCompile Include="ControllerInterface\ForceFeedback\ForceFeedbackDevice.cpp" />
     <ClCompile Include="ControllerInterface\XInput\XInput.cpp" />
+    <ClCompile Include="GCAdapter.cpp">
+      <!--
+      Disable "nonstandard extension used : zero-sized array in struct/union" warning,
+      which is hit in libusb.h.
+      -->
+      <DisableSpecificWarnings>4200;%(DisableSpecificWarnings)</DisableSpecificWarnings>
+    </ClCompile>
     <ClCompile Include="InputConfig.cpp" />
   </ItemGroup>
   <ItemGroup>
@@ -66,6 +73,7 @@
     <ClInclude Include="ControllerInterface\ExpressionParser.h" />
     <ClInclude Include="ControllerInterface\ForceFeedback\ForceFeedbackDevice.h" />
     <ClInclude Include="ControllerInterface\XInput\XInput.h" />
+    <ClInclude Include="GCAdapter.h" />
     <ClInclude Include="GCPadStatus.h" />
     <ClInclude Include="InputConfig.h" />
   </ItemGroup>
@@ -80,4 +88,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/Source/Core/InputCommon/InputCommon.vcxproj.filters b/Source/Core/InputCommon/InputCommon.vcxproj.filters
index 3c16ad5f26..6a63852303 100644
--- a/Source/Core/InputCommon/InputCommon.vcxproj.filters
+++ b/Source/Core/InputCommon/InputCommon.vcxproj.filters
@@ -16,6 +16,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="ControllerEmu.cpp" />
+    <ClCompile Include="GCAdapter.cpp" />
     <ClCompile Include="InputConfig.cpp" />
     <ClCompile Include="ControllerInterface\DInput\DInput.cpp">
       <Filter>ControllerInterface\DInput</Filter>
@@ -47,6 +48,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="ControllerEmu.h" />
+    <ClCompile Include="GCAdapter.h" />
     <ClInclude Include="GCPadStatus.h" />
     <ClInclude Include="InputConfig.h" />
     <ClInclude Include="ControllerInterface\DInput\DInput.h">
@@ -83,4 +85,4 @@
   <ItemGroup>
     <Text Include="CMakeLists.txt" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/Source/Core/UICommon/UICommon.cpp b/Source/Core/UICommon/UICommon.cpp
index 5ba825f5e2..8a4e76c535 100644
--- a/Source/Core/UICommon/UICommon.cpp
+++ b/Source/Core/UICommon/UICommon.cpp
@@ -11,11 +11,10 @@
 #include "Common/Logging/LogManager.h"
 
 #include "Core/ConfigManager.h"
-#if defined(__LIBUSB__) || defined (_WIN32)
-#include "Core/HW/SI_GCAdapter.h"
-#endif
 #include "Core/HW/Wiimote.h"
 
+#include "InputCommon/GCAdapter.h"
+
 #include "UICommon/UICommon.h"
 
 #include "VideoCommon/VideoBackendBase.h"
@@ -30,7 +29,7 @@ void Init()
 	VideoBackend::PopulateList();
 	WiimoteReal::LoadSettings();
 #if defined(__LIBUSB__) || defined (_WIN32)
-	SI_GCAdapter::Init();
+	GCAdapter::Init();
 #endif
 	VideoBackend::ActivateBackend(SConfig::GetInstance().m_strVideoBackend);
 
@@ -40,7 +39,7 @@ void Init()
 void Shutdown()
 {
 #if defined(__LIBUSB__) || defined (_WIN32)
-	SI_GCAdapter::Shutdown();
+	GCAdapter::Shutdown();
 #endif
 	WiimoteReal::Shutdown();
 	VideoBackend::ClearList();