Thank you to those who have posted. It's good to know that you can't erase 2 hard drives even though there are two bays. i think it's ok I couldn't figure out what the toggle button next to the drive bays is for. Has anyone figured it out? I would give more stars but haven't had the time to use all the features yet. Decided to add, this product doesn't work. Definitely not worth $$. So far only one disk has been erased. Bad service, terrible manual.
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