Do you want to install one of the exterior cameras or the 4th camera on the back of your trailer or 50-90 feet from the MDVR?
You can add this retractable 8 ft 4 Pin Cable for MDVR.
Retracts up to 30 ft
4 PIN Heavy Duty cable.
SD Card Reader for Phones/Tablet! Transfer Video to Phone/Tablet in Seconds
MicroSD 64 GB Card with Adapter Class 10 Ultra High Speed
MicroSD 128GB Card with Full Size Adapter - Class 10, Ultra High Speed
MicroSD 200GB Card with Adapter - Class 10 High Speed