DC-X cd adaptor?

I readed in a isos page about a DC-X import game cd adaptor for Dreamcast, that allows to play cable-protected games (games that won't work with RGB, etc) and to force 50/60 hz. I think that with it I can play my imports on a DC PAL at 60hz, think that I can't do now (only with patched copies). Is there anyone who can confirm it to me, and someone who can tell me where to download it? many thanks!
 
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