How do I replace a SIM card on a 12-slot station?

Unscrew the bottom of the station (one screw in the middle slot, covered with a sticker usually) and the back (four or five screws), then you can place the station upright and gently pull the front of the station towards you (you can grab the powerbank slots to pull the front off and towards you). In the panel you'll see a small SIM slot that you can press to unhinge/unlock to take the SIM out. Be mindful of the small cords around where the screws connect to the face of the station, sometimes when you slide it back on there are small black cords that can catch on the plastic slot where the screw goes in.