hey
i have the exact same problem same drive type travel star 20 i am on my second canverter and i got sick of it and now am looking for help so,... no its not your converter its the bios not being able to read it correctly or, the drive jumpers and mine does have a 4 pin block for jumpers directly next to the cable pins
my next step is to bum a friends laptop and stick my drive in his cradle then install hte os tehn swap it back if you have alredy tried this let me know not to waste my time
good luck
thanks
- robert
mrspiff@gmail.com