Western Digital My Book Premium 500GB USB/FW 400 Ext Hard Drive
DO NOT BUY THIS!
I have had this drive for two days and after copying files over and setting it up, I found I could not network the drive!  An error occurs referring to not enough server space.  I did my research and found that for most people who encounter this problem the solution is quick and easy, but for Western Digital, they do not support sharing over a network!  Strange, but I tried everything to get it to work.  This is my most disappointing purchase in some time, I am returning it and will never by Western Digital again.