Can I replace the internal 512gb drive to a higher capacity one?

The Amber X internal storage cannot be replaced with another one. You can, however, expand your storage by utilizing Amber X's USB port and SD card slot. You may also use a powered USB hub with an external power source to connect multiple USB drives to Amber X.

For a list of tested and working drives and formats, please visit our support page: https://support.myamberlife.com/hc/en-us/articles/360059975152