Hi,
I am sharing my exeperence.
Western Digital means WD external har disk is best qualiy. My one of friend was brought it online.
The performace of this harddisk wasvery good.very vest looking hard disk. It is very compact in size.
Storage capacity is 1 TB so its huge space to store your data. Data transfering speed from computer or Laptop to Harddisk or hardisk to computer or laptop is very fast.
Latest version Hardisk comes withe USB 2.0 and USB 3.0 connectivity. Actually letest laptop or Desktop comes with USB 3.0 so we can easily interface with letest version.
Thanks