USB to SATA/IDE Bridge is can't be mounted

I just bought the Eminent http://www.eminent-online.com/de/product/981/EM7016-overview.html USB to SATA/IDE adpater in order to be able to connect older USB 2.0 HDD and also DVD drives to my MBA (mid 2012). I run Mac OS X Version 10.7.5 but somehow the adapter is not recognised at all. The adapter provides power to the connected drives so it can't be the problem with too low output current.

Eminent gave me as a hint: support.apple.com/kb/HT1782 but that doesn't solve the problem.

I had one time when I connected a drive to the SATA portion of the adapter where I could connect and also format the HDD. Bute when I than copied something onto it it stopped working and I couldn't mount it again. When I use those drives with their "normal" connection = USB2.0 it works.

When I use the adapter with my work laptop (Windows 7) the adapter works without problems on everything I connect it to.

I'm fairly new to Apple so actually don't have any clue how to deal with that.

Can somebody help ?

BR

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