Asus PB40 - Installing the wireless card

ASUS Mini PC PB40 31
3. Align and insert the memory module into the slot (A) and press it
down (B) until it is securely seated in place.
Installing the wireless card
NOTE: Your Mini PC includes a M.2 slot for 2230 wireless and
Bluetooth modules. Refer to http://www.asus.com for the list of
compatible wireless and Bluetooth modules.
1. (optional) Some models may have a fan installed. If your model has
a fan installed, remove the three (3) screws securing the fan, then lift
the fan upwards so that it is perpendicular to the heatsink, but do not
remove the fan completely.