I'm posting this in case anyone else strikes the problem I had with this device. 

I bought one of these at DSE this afternoon. It supports USB 2.0 and 3.0.

It is my first (ever) USB 3.0 external drive. 

I connected the device to one of my USB 3.0 ports. It briefly (2-3 seconds) spun up...and then spun down. It would do nothing else. 

I tried booting up from a cold start with the disk connected to the USB 3.0 port. It would spin up fine with the blue USB 3.0 LED glowing....*until* about 10 seconds after the Win7 startup logo appeared. At that point the drive would spin down and power off. 

I connected it to a USB 2.0 port and it worked fine. No problem. 

This indicated to me that Windows 7 64-bit doesn't properly support USB 3.0. 

My PC is a PB Tech bare box that I installed OEM Windows 7. 64-bit Professional on.

After a wee bit of Googling, I found a link on the Toshiba web site for USB 3.0 drivers for Win7 64-bit for one of their laptops.

Hmm....a spec is a spec. So I installed the driver. It installed fine. 

I got it here: 

http://www.mytoshiba.co.nz/file/download/resource/file/19369/tc00344800n.exe

Once the driver install was complete, the Canvio Basics 3.0 drive was recognised on the USB 3.0 port and I have been able to use it without any obvious problems at this stage. 

So....if you buy one of these drives and your PC isn't from a major vendor with Windows 7 64-bit preloaded (and presumably this issue already sorted out)....then you may have to download support for USB 3.0 that matches the USB chipset on your motherboard.

That the Toshiba drivers appear to be working without any problems on my utterly non-Toshiba mongrel desktop PC suggests the spec is a robust one.