diff --git a/addons/hw_escpos/controllers/main.py b/addons/hw_escpos/controllers/main.py
index 78ed77a2318..d284d05dfdd 100644
--- a/addons/hw_escpos/controllers/main.py
+++ b/addons/hw_escpos/controllers/main.py
@@ -14,8 +14,6 @@ import usb.core
 from openerp.tools.translate import _
 from .. import escpos
 from ..escpos import printer
-#import escpos 
-#import escpos.printer
 from PIL import Image
 
 from openerp import http
@@ -29,6 +27,13 @@ class EscposDriver(hw_proxy.Proxy):
     supported_printers = [
         { 'vendor' : 0x04b8, 'product' : 0x0e03, 'name' : 'Epson TM-T20' }
     ]
+
+    def connected_usb_devices(self,devices):
+        connected = []
+        for device in devices:
+            if usb.core.find(idVendor=device['vendor'], idProduct=device['product']) != None:
+                connected.append(device)
+        return connected
     
     def get_escpos_printer(self):
         printers = self.connected_usb_devices(self.supported_printers)
diff --git a/addons/hw_proxy/controllers/main.py b/addons/hw_proxy/controllers/main.py
index 967323ae0d6..6ddf94843fd 100644
--- a/addons/hw_proxy/controllers/main.py
+++ b/addons/hw_proxy/controllers/main.py
@@ -7,30 +7,21 @@ import openerp
 import time
 import random
 import subprocess
-import usb.core
-import escpos 
-import escpos.printer
 import werkzeug
 import werkzeug.wrappers
+_logger = logging.getLogger(__name__)
+
 
 from openerp import http
 from openerp.http import request
 from openerp.addons.web.controllers.main import manifest_list, module_boot, html_template
 
-_logger = logging.getLogger(__name__)
 
 class Proxy(http.Controller):
     def __init__(self):
         self.scale = 'closed'
         self.scale_weight = 0.0
 
-    def connected_usb_devices(self,devices):
-        connected = []
-        for device in devices:
-            if usb.core.find(idVendor=device['vendor'], idProduct=device['product']) != None:
-                connected.append(device)
-        return connected
-
     @http.route('/hw_proxy/hello', type='http', auth='admin')
     def helloajx(self):
         return request.make_response('ping', {