Found in new Play.com sale. Cheapest I can find anywhere, most other retailers are min £59.99. Also remember Topcashback 2%! Note: it uses AC power.
An innovative, fan-less design and power-saving mode make this Buffalo JustStore Desktop a dependable, economical and silent solution. Auto installation, easy operation and auto power on/off, you can quickly store, access, and transfer files, digital images, documents, and back-ups. Just plug it in to a PC or Mac and it works!
* USB 2.0 interface
* Pre-formatted drive for immediate use
* Easy set-up, no drivers required
* Silent fanless operation
* Connects to USB on any PC or Mac