Asus Zenfone Series — Zenfonerootkit Tools - One Click Root
Found in Developer Options on your phone. Install ADB Drivers: Ensure your PC recognizes the device.
I notice you've shared a title or label: ZenFoneRootKit Tools - One Click Root Asus ZenFone Series
I used ZenFoneRootKit Tools to root my Asus ZenFone 5 (ZE620KL). Here's how the process went: Found in Developer Options on your phone