Z9 Max is added by ZTE to its Nubia series with some amazing features. ZTE Nubia Z9 Max powered by Snapdragon cpu from Qualcomm. Here you can download its usb , adb fastboot drivers.
Download ZTE Nubia Z9 Max USB ADB Fastboot Drivers
Supported OS : Windows XP / Windows Vista / Windows 7 / Windows 8 / Windows 8.1 / Windows 10 32 and 64 bit