Browse to C:\Program Files (x86)\Android\android-sdk\extras\google\usb_driver
Make sure you can write to android_winusb.inf (properties, security, edit right for users to modify the file).
Right below [Google.NTamd64] add lines:
%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0C87&MI_01
Go to control panel and open device manager
Choose adb(one with yellow exlamation mark), right click and choose Update Driver Software
Choose Browse my computer for driver software
browse to C:\Program Files (x86)\Android\android-sdk\extras\google\usb_driver (include subfolders is checked)
press next, click yes on are you sure for unsigned driver
adb devices will now find your device.