For the longest time, portable flash drives have been tied to the USB interface, despite faster interfaces for external devices being available. Perhaps this is because of the popularity and proven history of the USB interface. However, a small and rather unknown company by the name of Kanguru set out to change things up and introduced the eFlash, a flash drive which can be used with either USB or eSATA interfaces . Kanguru claims the drive is over twice as fast when using eSATA instead of USB 2.0