EXT Port: To connect an external GPS
Useful in cases where there is a heat reflective film or heated front windscreen that may screen the GPS signal from the camera)
BATT Port: For the iVOLT Xtra External Battery
It comes with a communication cable that plugs in to this port to allow the dash cam to verbally tell you about the battery's status
Thinkware Hardwiring Kit may be purchased separately if hardwiring is preferred. A Spliced Thinkware Hardwire Kit is required if you are connecting to a dash cam battery pack, which will be provided by default if purchased bundled with the U300, but will otherwise need to be purchased seperately. You can also choose the IROAD OBD cable, which is fully compatible.
The Thinkware OBD-II cable has been updated to a new version, which has been found to be compatible with nearly all vehicles (except Tesla). EVs, Hybrids, and standard Gas vehicles are all compatible with the Thinkware OBD cable.