Here’s a brief description of the 6AV2101-3AA08-0AE5 from Siemens:

• Product Type: SIMATIC WinCC Comfort V18, upgrade from V11–V17 to V18.
• Manufacturer: Siemens.
• License Type: Floating License.
• Languages Supported: English, German, Chinese (included), French, Spanish, Italian, Russian, Japanese, Korean (available for download).
• Contents: Software and documentation on DVD, with a license key on a USB flash drive.
• Status: This product is discontinued and has been replaced by 6AV2101-3AA02-3AE5.
• Stock Availability: Limited availability from select distributors.
• Pricing: Varies by distributor and condition (new, surplus, refurbished).
• Shipping: Worldwide express delivery available.