+#if defined(HOST_PJRC)
+# include "usb.h"
+# if defined(KBD2_REPORT_KEYS) && KBD2_REPORT_KEYS > KBD_REPORT_KEYS
+# define REPORT_KEYS KBD2_REPORT_KEYS
+# else
+# define REPORT_KEYS KBD_REPORT_KEYS
+# endif
+#elif defined(HOST_VUSB)
+# define REPORT_KEYS 6
+#endif
+