diff --git a/src/calibre/devices/hanvon/driver.py b/src/calibre/devices/hanvon/driver.py
index d5b71b2cf5..75728a94ea 100644
--- a/src/calibre/devices/hanvon/driver.py
+++ b/src/calibre/devices/hanvon/driver.py
@@ -43,6 +43,7 @@ class THEBOOK(N516):
     BCD = [0x399]
     MAIN_MEMORY_VOLUME_LABEL  = 'The Book Main Memory'
     EBOOK_DIR_MAIN = 'My books'
+    WINDOWS_CARD_A_MEM = '_FILE-STOR_GADGE'
 
 class ALEX(N516):