I just used the Touro Mobile MX3 1TB to back up my MacBook Pro with no problem. This Mac has USB 2.0 connectors not USB 3.0, but the Touro is compatible with both types (ie the cable provided will connect to both types). I backed up approximately 200 Gb of files in about 135 minutes; that's roughly 25 Mb/sec which is what I expected. With a USB 3.0 port you will probably get 3 or 4 times that speed. I checked that I could successfully recover a couple of files via Time Machine. As some reviewers have noted, the Touro is compact and lightweight - the USB cable that comes with it is short (about 43cm or 17") and sturdy. It means that the disk tends to follow the cable, rather than vice-versa, but that will not be a problem for most users.
My only slight criticism is that the box containing the disk has a list of contents;
2.5" portable drive USB 3.0 cable Quick Start Guide
and I searched for a couple of minutes for the 'Quick Start Guide' before it dawned on me .... the 'Quick Start Guide' isn't on paper, its on the disk ... and my Mac can't see it because the disk is formatted for Windows! Doh! Still, it would have been nice if the manufacturer had at least provided the following advice for Mac users (which you will already know if you are experienced with Macs):
To format the disk for Mac Connect the disk to your Mac using the USB cable provided On your Mac Select Applications/Utilities/Disk Utility Select the disk 'TOURO', visible in the list on the LHS of the Disk Utility window Select 'Erase' from the options on the menu bar in the main part of the Disk Utility window Set the 'Format' to 'Mac OS Extended (Journaled)' Enter the 'Name' as whatever you choose to call the disk Click 'Erase'
and the disk will be erased, renamed and reformatted to be Mac compatible (It takes a minute or so), ready for use as a backup disk with Time Machine, or for whatever else you may use it.
That same procedure will work for most hard disks you are likely to come across - with 'TOURO' changed to whatever is the manufacturer's name of your new disk.
Note: Touro production is now owned by Western Digital. In March 2011, Hitachi agreed to sell its hard disk drive subsidiary, Hitachi Global Storage Technologies (HGST), to Western Digital. The transaction was completed in March 2012.