I've bought around 4 or 5 vantec external drive enclosures over the last 8 years or so, and in every case the ac adapter  has failed (the last one failed last week).  I've never had ac adapters fail on any other device. 

I've just binned them all now.  I understand it is possible to buy replacement ac adapters but they use this mini-din plug and it is difficult to find and I don't want to blow up my HDD's so safer to bin I guess .

I was just curious as to whether anyone else has had issues with vantec AC adapters. 

I was considering buying the vantec 4-bay drive -- but, very much put off .