This is #1: Toshiba Canvio Basics Portable Hard Drive 320 GB USB 2.0 External Hard Drive E05A032BAU2XK Black on the Amazon.com: Bestsellers in Electronics list:
Toshiba Canvio Basics Portable Hard Drive 320 GB USB 2.0 External Hard Drive E05A032BAU2XK Black
by Toshiba 
8 days in the top 100
(42)
Buy new: $49.99 $46.29
19 used & new from $41.49
(Visit the Bestsellers in Electronics list for authoritative information on this product’s current rank.)