This 4 TB external hard-drive works extremely well. The back up software is excellent and simple to set up and quietly backs up my data. The unit is compact and doesn't generate excessive heat. I have several of these units now. I highly recommend this product.

The WD Portable Hardrive Causes a "Kernel Panic" on my MAC and closes down my computer every time I access it and leave it connected for an hour. I cannot leave it connected and now just use it as a stand alone backup.

I've been using these Western Digital external HD's for ages and I've never had a problem with them. I back up every day using the security password feature and it's great. I've used external HD's from a variety of manufacturers, including Transcend, and I've gotten the best service out of the...

I bought this because it says it's compatible with Apple and it is but it took hours of research and a few false starts to get there. Unlike a previous purchase which simply plugged in, this one needs to be ‘partitioned' and although I found out how from help sites I still have no idea what I've...