The good old Belkin F5U409 also works fine under windows 7 64 bit.
But not with Belkin drivers.
Belkin say no support but some ennterprising young chap sorted the issue out for us.
see this blog here
http://www.clearchain.com/blog/posts...bit-mac-osx-10 for the right driver to download. I used this in fact today to install a new robofocus based Camera rotator on my windows 7 64 bit laptop. works great