For windows 10 Chuwi Hibook I suggested to use "3DP Chip". This app can download the drivers for Graphics, Bluetooth, WiFi and else from any computers such as Chuwi, Asus, Acer, etc|
You can download from the link listed.
But I can't guarantee that ur MicroSD slot can be solved.
Because this apps solved my WiFi driver on my Chuwi Hibook Windows 10. Good luck