A Russian customer crossed the border into China to purchase the drive you see above from a computer shop of dubious legitimacy, at an unbelievably low price. On first glance, it appears to be a 500 GB Samsung external hard drive with a few typos on the case ("Complant" 480 Mbps). As the customer observes, his new drive does show up with a capacity of 500 gigabytes, and it does manage to hold a few small files. The problem is with copying anything large - the drive would hold only the last few minutes of a copied movie file, for instance.
So he took his "broken" hard drive to his local computer shop to have it checked out. Imagine how much of a laugh the techies had when they opened up the drive to find a small PCB with a 128 MB flash chip, and two metal bolts to give the otherwise hollow drive some weight. The controller was made to report a 500 GB capacity and copy files in a loop when it reached past 128 MB.