I bought this
Western Digital WD Elements 320 GB USB 2.0 Portable External Hard Drive WDBAAR3200ABK-NESN (Black) last week at, I regret to say, Target - not Amazon. Target had it "on sale" at $59.95, an irresistible price. This unit works perfectly with Linux (both Ubuntu Linux - which is my main computer's operating system - and the modified-Xandros Linux found on the
ASUS Eee PC 1000 10-Inch Netbook (1.6 GHz Intel Atom N270 Processor, 1 GB RAM, 40 GB Solid State Drive, 20 GB Eee Storage, Linux, 6 Cell Battery) Pearl White which I own) and, naturally, Windows. (It is "pre-formatted" for Windows - it has some programs incorporated which I of course immediately deleted as I do not use Windows.) This unit will also work perfectly with the Apple Mac operating system (Windows and Mac compatibility are specified on the box.) As another reviewer has mentioned, it may be necessary to format the drive for use with a Mac.
Used with a Linux computer, no formatting or any other special operations are necessary. Just plug it in and you're instantly "on!" (Of course, this same comment about no formatting necessary also applies to Windows computers, though, the first time you use it, a Windows machine may take a few seconds to recognize the new drive.)
Packaged with the unit is a standard USB connection cord (supports v. 1.1 and 2.0 and, in addition to connecting to your computer for data transfer, it also powers the unit; no other external power supply is necessary) as well as the usual warranty, etc., information. In addition a CD containing the operating manual is included. I have not looked at this - really however, what is there to know about how to use this external drive? Just plug it into your computer! - that is, of course, if you use these drives as I use them: as storage units only. (I now own quite a few of these drives.)
I find that, especially with Ubuntu Linux, that it is very easy to copy everything in one's "Home" folder to one of these external drives and, should it become necessary to reinstall the operating system, it is quite easy to restore all of your documents, music, pictures, etc. from the external drive. It is also possible to store one's music, videos, audio books, etc. on one of these drives thus freeing up space from your computer's hard drive. (That's why I have several of these things!)
Naturally, the same uses I mention above are also available to Windows or Mac users. These portable external hard drives are very useful and this one, being a simple, basic, unit, is all one truly needs, in my opinion, if your reasons for buying one are the same as mine. I do suggest that, if you do not have an urgent need for one of these drives, or if you are buying an "extra" or "spare" unit, you wait until you see a really good "sale" price either on Amazon or elsewhere.
Like all Western Digital external hard drives that I own it is very well-made and, with reasonable care, should last a very long time. (My oldest Western Digital external drive - 40 GB, "huge" at the time I bought it - is over five years old, still in use, and still going strong.) In my own personal experience the company is reputable, responsive and VERY customer-oriented.
I highly recommend this unit.