This listing features a used Noregon JPRO DLA+ 121591 Mack Volvo OBD Diagnostic Cable, an essential component for commercial truck diagnostics. This 121591 cable is specifically designed for Mack and Volvo heavy duty trucks, connecting to the Noregon JPRO DLA+ Vehicle Interface. Ideal for DOT repair facilities and fleet maintenance shops, this diagnostic interface cable facilitates communication between the vehicle and the JPRO software. The green 26-pin adapter end connects to the DLA+ interface while the purple Mack Volvo OBD end plugs into the vehicle diagnostic port.