diff --git a/src/calibre/devices/android/driver.py b/src/calibre/devices/android/driver.py
index 5b0664515d..e083b38490 100644
--- a/src/calibre/devices/android/driver.py
+++ b/src/calibre/devices/android/driver.py
@@ -171,7 +171,7 @@ class ANDROID(USBMS):
             'FILE-STOR_GADGET', 'SGH-T959', 'SAMSUNG_ANDROID', 'GT-P1000_CARD',
             'A70S', 'A101IT', '7', 'INCREDIBLE', 'A7EB', 'SGH-T849_CARD',
             '__UMS_COMPOSITE', 'SGH-I997_CARD', 'MB870', 'ALPANDIGITAL',
-            'ANDROID_MID', 'P990_SD_CARD']
+            'ANDROID_MID', 'P990_SD_CARD', '.K080']
 
     OSX_MAIN_MEM = 'Android Device Main Memory'
 
diff --git a/src/calibre/devices/kobo/driver.py b/src/calibre/devices/kobo/driver.py
index 1e4cb6c63c..6e58e27cc7 100644
--- a/src/calibre/devices/kobo/driver.py
+++ b/src/calibre/devices/kobo/driver.py
@@ -40,7 +40,7 @@ class KOBO(USBMS):
     CAN_SET_METADATA = ['collections']
 
     VENDOR_ID   = [0x2237]
-    PRODUCT_ID  = [0x4161, 0x4163]
+    PRODUCT_ID  = [0x4161, 0x4163, 0x4165]
     BCD         = [0x0110, 0x0323, 0x0326]
 
     VENDOR_NAME = ['KOBO_INC', 'KOBO']
diff --git a/src/calibre/ebooks/metadata/book/base.py b/src/calibre/ebooks/metadata/book/base.py
index 58f28af01f..53d336a23d 100644
--- a/src/calibre/ebooks/metadata/book/base.py
+++ b/src/calibre/ebooks/metadata/book/base.py
@@ -32,6 +32,7 @@ NULL_VALUES = {
                 'device_collections': [],
                 'author_sort_map': {},
                 'authors'      : [_('Unknown')],
+                'author_sort'  : _('Unknown'),
                 'title'        : _('Unknown'),
                 'user_categories' : {},
                 'author_link_map' : {},
diff --git a/src/calibre/gui2/custom_column_widgets.py b/src/calibre/gui2/custom_column_widgets.py
index e154539141..d3a8c34a1e 100644
--- a/src/calibre/gui2/custom_column_widgets.py
+++ b/src/calibre/gui2/custom_column_widgets.py
@@ -697,7 +697,6 @@ class BulkDateTime(BulkBase):
             val = None
         else:
             val = qt_to_dt(val)
-        print val
         return val
 
 class BulkSeries(BulkBase):
diff --git a/src/calibre/gui2/wizard/__init__.py b/src/calibre/gui2/wizard/__init__.py
index 9fe258e836..c0965412db 100644
--- a/src/calibre/gui2/wizard/__init__.py
+++ b/src/calibre/gui2/wizard/__init__.py
@@ -122,6 +122,11 @@ class Kobo(Device):
     output_format = 'EPUB'
     id = 'kobo'
 
+class KoboVox(Kobo):
+    name = 'Kobo Vox'
+    output_profile = 'tablet'
+    id = 'kobo_vox'
+
 class Booq(Device):
     name = 'bq Classic'
     manufacturer = 'Booq'
diff --git a/src/calibre/library/save_to_disk.py b/src/calibre/library/save_to_disk.py
index 45d80839b2..69565e07d7 100644
--- a/src/calibre/library/save_to_disk.py
+++ b/src/calibre/library/save_to_disk.py
@@ -173,8 +173,6 @@ def get_components(template, mi, id, timefmt='%b %Y', length=250,
     tsorder = tweaks['save_template_title_series_sorting']
     format_args = FORMAT_ARGS.copy()
     format_args.update(mi.all_non_none_fields())
-    if mi.is_null('author_sort'):
-        format_args['author_sort'] = _('Unknown')
     if mi.title:
         if tsorder == 'strictly_alphabetic':
             v = mi.title