diff --git a/converter/usb_usb/main.cpp b/converter/usb_usb/main.cpp
index 4e655632..0b536b05 100644
--- a/converter/usb_usb/main.cpp
+++ b/converter/usb_usb/main.cpp
@@ -8,6 +8,7 @@
 #include "hid.h"
 #include "hidboot.h"
 #include "parser.h"
+#include "usbhub.h"
 
 // LUFA
 #include "lufa.h"
@@ -23,6 +24,15 @@
 static USB     usb_host;
 static HIDBoot<HID_PROTOCOL_KEYBOARD>    kbd(&usb_host);
 static KBDReportParser kbd_parser;
+static USBHub hub1(&usb_host);  // one hub is enough for HHKB pro2
+/* may be needed  for other device with more hub
+static USBHub hub2(&usb_host);
+static USBHub hub3(&usb_host);
+static USBHub hub4(&usb_host);
+static USBHub hub5(&usb_host);
+static USBHub hub6(&usb_host);
+static USBHub hub7(&usb_host);
+*/
 
 static void LUFA_setup(void)
 {
diff --git a/protocol/usb_hid.mk b/protocol/usb_hid.mk
index 6914dce8..8fda76c2 100644
--- a/protocol/usb_hid.mk
+++ b/protocol/usb_hid.mk
@@ -8,6 +8,7 @@ USB_HOST_SHIELD_DIR = $(USB_HID_DIR)/USB_Host_Shield_2.0
 USB_HOST_SHIELD_SRC = \
 	$(USB_HOST_SHIELD_DIR)/Usb.cpp \
 	$(USB_HOST_SHIELD_DIR)/hid.cpp \
+	$(USB_HOST_SHIELD_DIR)/usbhub.cpp \
 	$(USB_HOST_SHIELD_DIR)/parsetools.cpp \
 	$(USB_HOST_SHIELD_DIR)/message.cpp