Bipra 60GB 2.5 inch USB 2.0 Mac Edition Portable External Hard Drive - Silver
http://www.amazon.co.uk/gp/product/B009E346LS?tag=istiqomah-21
Portable External Hard Drive Powered By USB 20 No external Power Required
Connection USB 20 Carry case Dimensions 49 x 30 x 05 126mm x 76mm x 13mm
Suitable FOR Mac OS only Macbook iMac and Macbook Pros
Formatted in Mac OS Extended Journaled
1 Year Warranty From Bipra Limited