Hello Gurus!
I just got funny Samsung drive. Looks like it is custom built for Freecom, no info on it anywhere on the Internet

It had a bad fall so I need to replace heads in it. Got another one, exactly the same and I hope it will do. Look at the pictures:

Full size pictures available here
http://pokazywarka.pl/yrv933/I hope heads will match as I cannot see no typical markings to match donor drive (or perhaps there are but I don't know what to look for), but more than that, I will need to build SATA interface to connect it straight to PC3000.
There are three pins that should be Ground and Supply (5V) lines and four pins that should ne A+, A-, B+, B- so I just need to figure out which are which. By the way - will that bypass USB-to-SATA bridge or do I need to disable it somehow?
By the way - has any of you met this drive before? I may not be so lucky next time to get exact same drive for parts, so how to find suitable standard drive in that case? HM400LI seems to be the origin but what parameters do I need to look at to match suitable donor?
Cheers,
Pawel.