Make sure your Surface Pro X is turned off, and laying screen-side down on a soft surface.

After turning off your device, make sure to remove the SSD from the Surface before starting any repairs. This will disconnect the battery and prevent damage to the device.

Lift the kickstand to at least a 90° angle, so that it is perpendicular to the Surface's screen. The further you open the hinge, the easier it is to access the SSD and SIM card door.