Here’s a brief description of the 6AV2103-0DA03-0AA5 from Siemens:

• Product Type: SIMATIC WinCC Professional 512 Power Tags V13 SP1 Engineering Software in TIA Portal.
• Manufacturer: Siemens.
• License Type: Floating License.
• Languages Supported: English, German, French, Spanish, Italian, Chinese.
• Operating System Compatibility: Windows 7 (32-bit, 64-bit), Windows 8.1 (64-bit), Windows Server 2008/2012 R2 (64-bit).
• Contents: Software and documentation on DVD, with a license key on a USB flash drive.
• Status: This product is discontinued and has no direct replacement.
• Stock Availability: Limited availability from select distributors.
• Pricing: Varies by distributor and condition (new, surplus, refurbished).
• Shipping: Worldwide express delivery available.