diff --git a/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc b/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
index f4fc2d718e..c029c439f1 100644
--- a/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
+++ b/SourceLevelDebugPkg/SourceLevelDebugPkg.dsc
@@ -44,11 +44,15 @@
   PeCoffExtraActionLib|SourceLevelDebugPkg/Library/PeCoffExtraActionLibDebug/PeCoffExtraActionLibDebug.inf
   TimerLib|UefiCpuPkg/Library/SecPeiDxeTimerLibUefiCpu/SecPeiDxeTimerLibUefiCpu.inf
   ResetSystemLib|MdeModulePkg/Library/BaseResetSystemLibNull/BaseResetSystemLibNull.inf
-
+  PciLib|MdePkg/Library/BasePciLibCf8/BasePciLibCf8.inf
+  PciCf8Lib|MdePkg/Library/BasePciCf8Lib/BasePciCf8Lib.inf
   PlatformHookLib|MdeModulePkg/Library/BasePlatformHookLibNull/BasePlatformHookLibNull.inf
 
+!ifdef $(SOURCE_DEBUG_USE_USB)
+  DebugCommunicationLib|SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.inf
+!else
   DebugCommunicationLib|SourceLevelDebugPkg/Library/DebugCommunicationLibSerialPort/DebugCommunicationLibSerialPort.inf
-  #DebugCommunicationLib|SourceLevelDebugPkg/Library/DebugCommunicationLibUsb/DebugCommunicationLibUsb.inf
+!endif
 
 [LibraryClasses.common.PEIM]
   PeimEntryPoint|MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf