Some users purchase PNY 16GB SDHC memory card are encountering problem to record video then unable to power off the car DVR. This is due to car DVR goes self-protection mode, when this situation happens, you need to RESET your car DVR. Please click below link to read troubleshooting.

http://www.roadmatedvr.com/article.php?search_string=reset&search_category_id=30&article_id=63

The quality of SDHC memory vary in brands, brands such as SANDISK, KINGSTONE, TRANSCEND,  etc. are tested by our technical department.