The U.S. Department of Transportation-certified CRM Crash Hardened Memory Module (CHMM) is an advanced Positive Train Control and Locomotive Data Acquisition and Recording System event recording solution offered by Bohr Electronics for various types of locomotive data management infrastructures. The CHMM features a robust, crash-worthy memory system. This versatile module supports configurations from 2GB to 128GB. It includes various data transfer interfaces such as Ethernet, USB and serial ports, allowing users to cost-optimize memory requirements for their specific applications.