diff --git a/src/calibre/devices/misc.py b/src/calibre/devices/misc.py
index d74f727a0e..a2d1817de0 100644
--- a/src/calibre/devices/misc.py
+++ b/src/calibre/devices/misc.py
@@ -268,5 +268,5 @@ class NEXTBOOK(USBMS):
     EBOOK_DIR_MAIN = ''
 
     VENDOR_NAME = 'NEXT2'
-    WINDOWS_MAIN_MEM = '1.0.14'
+    WINDOWS_MAIN_MEM = WINDOWS_CARD_A_MEM = '1.0.14'