You are better off getting some type of playback device. USB thumb drive should be your very last resort. It is slow and will not yield good playback.
There are so many options. Computer, DVD, Apple TV, KiPro, Blackmagic Hyperdeck, DV Camera, Atomos Ninja and list goes on including digital signage devices.
Steve Eisen
Eisen Video Productions
Vice President
Chicago Creative Pro Users Group