Ended up returning the Sandisk Reader and 1TB Extreme Micro SD. Could not get it for work for DASH CAM / SENTRY. Formatted as Dos-Fat and ExFat. Would reformat in the car and read "success", However DASHCAM was unavailable and said to check the USB. It would show up as an external storage device that I could do nothing with. If anyone has any helpful information, Id really like to upgrade the memory/storage and quality of sentry if possible. Ive read that the SSD's are not great for constant read/write functions, that is why I chose the MicroSD option. ANY SUGGESTIONS? please help.