I have one of older product, its also My book with USB/ESATA 250 GB. I was very disappointed with this one. First I lost all my data, because the HDD was wrong… I contact WD, and they replaced HDD… no data recovery. After few weeks the HDD crashed again… but I removed HDD from box and tried to recover data - the HDD was OK and nowadays is OK more than 2 years. But I lost warranty… I thought HDD was OK also first time, but the problem was in electronics of the box and also firmware. I lost few monts of time with WD, spent approximately 4 times more money as I payed for My book by the seller, lost all my data one-time but the problem wasnt solved till today. The service and customer support is very poor by WD, trust me, it’s total **bleep**.