3TB My Book for Mac External Hard Drive is rated 4.6 out of 5 by 25 .

Rated 5 out of 5 by Sam I am from Easy to use, even for a novices like me. I am currently using the Western Digital 3T external hard drive for storing photos, home movies, music, and other documents that I want stored securely off of my main computer. One of the greatest things about this device is how user friendly it is to set up and use right out of the box. The software that is included with it blended seamlessly with my Mac Book Pro and my Mac tower. One of the other nice things about this device is the fact that it does not take up very much space on your desktop and is small enough to be easily transported to and from work. One of the draw backs is that it does not come with a physical user's manual. Even though the device and software are fairly intuitive to use there are inevitably questions that I would like answered in a manual. However, if lack of a users manual is what would hold you back from this device then you are going to miss out on a very user friendly system.

Rated 5 out of 5 by dragonrider from Great addition to my storage For backup of my computer. Easy to hook-up, very light weight, small footprint, Especially like the view port that tells me how much has been used. Like the fact that it connects to the MAC Time Machine and continuously backs up new changes and additions. Gives peace of mind.

Rated 4 out of 5 by 25M from GREAT!!! I've formatted the drive to get rid of all the softwares, but still got 2.7GB available to use. Wonder what the 3GB is spent for- That was my only complaint. Fast enough file transfer for USB connection. My 1TB and 2TB drives got full so I got this 3TB and quite happy with it so far. I would suggest firewire compatible drive if you can spend some more money and own a mac.

Rated 5 out of 5 by Amy the photographer from Best investment for Mac users! I have wanted an external hard drive for my Macbook Pro for quite some time, and I finally found one that works for me! It's compatible with Time Machine, so it automatically backups my work so I don't worry anymore about losing my photos, music, and documents. I'm a photography major in college so the ease of knowing my photographs are saved is a plus!

Rated 5 out of 5 by Ben from It just works. I plug it in, and it works. I own a half dozen of these, and I've only ever had an issue once in the 10 years I've been using these hard drives. WD was able to replace it quickly when I had that one problem, and I haven't had any problems with the replacement or any of my other hard drives since.

Rated 5 out of 5 by MrNumberman from So far, so good! Plugged it right into my Mac Pro from 2007, worked great. Back to the ol' USB cable, which is slower, but a lot more common. I still like having a hard copy of the instructions, which this does not come with (the instructions are all within the hard drive) Pretty good price for that much storage.

Rated 4 out of 5 by Just another Mac user from One minor issue This product works as advertised except that the gauge showing the amount of disk used does not work. It may work if you use the WD applications, but doesn't function when the disk is used as a normal external drive to a Mac. B&H's price was very reasonable and its shipping was very prompt.