TS5400D and Turbocopy

[sonsenfrancais]

I've just set up my new TS5400D as a companion for my TS-XEL4BA

In the packaging is a sheet referring to TurboCopy, which says that the version on the CD should not be used and the latest version should be downloaded from 

http://www.buffalo-technology.com/en/download.html">http://www.buffalo-technology.com/en/download.html

for the EU

That page has no such download (for the TS5400)

Elsewhere in these forums I see that one is supposed to download it from the japanese site -

http://buffalo.jp/download/driver/hd/ts5000.html">http://buffalo.jp/download/driver/hd/ts5000.html

which does not seem to have it either 

 

Is it available anywhere ? Alternatively, can the version on the CD be used safely ?

When doing large-scale reorganisation of data between two Terastations, a utility to optimise data copying would be very useful