Here you can download usb and adb drivers for Huawei Nexus 6P which is also known as Google Nexus 6P, Huawei H1511 / H1512 (Angler).
USB drivers are required to connect phone with pc windows and adb drivers are needed to perform adb fastboot function.
Download Huawei Nexus 6P USB-ADB Drivers
Supported OS :
Windows XP / Windows Vista / Windows 7 / Windows 8 / Windows 8.1 / Windows 10 both 32 and 64 bit