We all know that Google has blocked external sd card access on Kitkat for third-party apps. And there are some "solutions" trying to bring the old days back, but all those solutions requires root access to your device, which is useless for entry and mid-level users.
Today I found an app called 'File Expert', which could access external SD card on on my S4 with official Android 4.4.2 Kitkat ROM without any problems, just like what other file managers did in the past. The most important is, it doesn't need you to root your device first, it means safe.
Try it here:
For tablet users, please consider HD version here:
Here is their official artical to describe how to access external sd card on Kitkat using File Expert without root:
http://blog.xageek.com/?p=246 and http://blog.xageek.com/?p=258
i test and this app work fine on android 5.1.1