The Siemens part number 6DL5260-0BX18-0YA5 refers to the SIMIT Simulation Framework Professional V8.1. Here's the full breakdown:

Software: SIMIT Simulation Framework Professional V8.1

License: Floating license for 1 user

Delivery: Includes CD (software and documentation) and USB dongle (license key)

Languages: German and English

Supported OS: Windows 7 Professional / Ultimate

Reference Hardware: PC/PG

Special Requirement: Must be used with a valid license/dongle and requires a Legacy System Services Contract

Product class: A (standard product)

Net weight: 0.346 kg

Country of origin: Germany

Discontinued: Officially deleted without replacement as of December 31, 2021