Cavalry External Hard Drive: Cheap But at What Cost?

Two things that intrigued me about this drive from Cavalry. First, it's cheap, especially for the size: $99 for 500 GBs is a nice price for a hard drive, especially an external one. Second, it's so efficient at heat dispersal that it has no internal fans – which probably helps lower the price, come to think – so it's quieter than the average bear. Sound good? Well, there's one caveat: it's a 5400 RPM, USB 2.0 drive. In other words: it'll store what you need, but it won't be the fastest option available by far. Might be worthy of consideration for a backup drive, though.