This document provides a support matrix for ArcSight ESM and its components, including supported operating systems and end of support dates. It lists supported operating systems and browsers for the ESM Manager, Console, and Express. Products at end of support include ESM versions 5.0.x and earlier as well as appliance models E7400 and E7200. Supported operating systems include recent versions of RHEL, CentOS, Windows Server and Mac OS X. The document defines key terms and provides detailed version and patch level information.