Feb 9, 2014
The PS4 does not run IE web browser so did not need to be rushed with an app...
The PS4 browser uses the Webkit Browser engine and has zero problems with HTML5 web site usage unlike the now Random IE web browser usage.
SIEE PS3/PS4 Beta Tester
From SIE blog firmware 4.50 post "There is no guarantee that all USB storage devices are compatible with your system."