You can download PC Driver for Asus ZenFone Max (M2) ZB633KL for windows from below link. These driver are needed to connect mobile phone with pc. These drivers are tested and working.
Download Asus ZenFone Max (M2) ZB633KL Q-USB USB Drivers
Supported OS : Windows XP / Windows Vista / Windows 7 / Windows 8 / Windows 8.1 / Windows 10 both 32 and 64 bit