Product Descriptions: 1. Wide Compatibility: MPS-493033 Adapter is a 3 pin diagnostic cable used to connect your device to Cummins engines with either a J1939 3 pin Deutsch or a 2 pin adapter. 2. Designed for Nexiq USB Link: Specifically engineered for use with Nexiq USB Link 3 (both wired and wireless editions), USB Link 2 Bluetooth, Wi-Fi Edition, and the Cummins Inline 7, this adapter provides reliable connections for diagnostic and programming tasks. .