Possible correction: I received a note directly from Western Digital saying the brand new 1 terabyte portable drive I wanted was no longer available. However, they did not mention it by name or model number. In at least one reference article I read that the two drives I asked about in my research are actually the same drive repackaged into the different internal and external form factors. Perhaps for some reason only due to form factor it appears one drive is still available and one is not. I am sending in more inquiries to check before I buy anything. At least one ad page still says the "My Passport" 1T is available. The same page says it is the same drive in different form factor. This is at the end of the article located at: http://gizmodo.com/5323594/wd-scorpio-blue-drive-is-first-one-terabyte-mobil... Hopefully between us we can find out enough of the details. Thanks!!! Michael