I bought this USB 3.0 2 terabyte drive to replace a USB 2.0 1 terabyte external drive that was using for a Time Machne drive on my Mac. I plugged the new drive in - I didn't even bother installing the utilities - and it was recognized immediately by the Mac. Getting it to 'adopt' my old Time Machine backups was straightforward but painfully slow. I would attribute that to my old drive being USB 2.0 but also the huge number of files.

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Save yourself grief: don't use 'Finder' to copy the files, use 'Super Duper!' Still, expect that it could take 30+ hours to migrate a terabyte of backup files. Once it finished, I told Time Machine to use the new drive and it's worked like a charm ever since. Now what I don't like: the white drive activity LED on the drive can either be OFF or it can be blinking.

I would prefer a true activity indicator, and maybe a choice of colours (tricolour LEDs are cheap). The utilities on the drive were much newer than what Western Digital had online. The utilities are quite limited in what they can set. Other than that, I'm very pleased with it. And Walmart was by far the least expensive place to buy it.

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