The Siemens 6ES7823-1FA04-0YE5 is a SIMATIC S7-PLCSIM Advanced V5.0 Upgrade Package, designed to upgrade from V1.0..V4.0 to V5.0. It comes with a floating license, and the software and documentation are provided on a DVD, with the license key stored on a USB flash drive. This package supports English and German and is executable on Windows 10 and Windows 11. However, this product was discontinued on January 1, 2025, and has no direct replacement. If you need assistance, Siemens recommends contacting their local office.