I just bought my second "My Passport" drive. I bought the model that holds 1 terabyte of data. I didn't do any reformatting due to needing it for the office and a Windows 7 system.
I had to buy a new Passport because the cord doesn't last as long as the drive. After constant use, it tends to weaken and the connection becomes spotty. Plus, Western Digital put an extra data line in the cord. So, if you buy an off the shelf replacement, it's not going to work. MicroCenter told me it has to be ordered from WD.
So, I copied the old drive to my PLinuxOS system, then copied it all to my new drive. Not everything copied over. so, Il probably have to get thst replacement cord for the old drive sometime in the near future.

Really?
That's sounds like BS. I'd recheck who you give your money to.
Admittedly, I'm using an older, 500 GB model, but I use all kinds of different USB cables with (whatever I have on hand...Blackberry changed the end on their newest model, so it's non-standard

, so I'm currently using the USB cable that came with my previous BB).
Now, I do agree there are good quality cables, and poor quality, and it pays to use a good quality...but I dislike vendors who mess around with the specs just to get you to buy a proprietary cable (Sony, Olympus, RIM...

). If WD is going down this road, as well, I don't think I'll be giving them any more money, either!