Here’s a brief description of the 6AV2101-4BB04-0AE5 from Siemens:

• Product Type: SIMATIC WinCC Comfort V14 SP1 Upgrade.
• Manufacturer: Siemens.
• License Type: Floating License.
• Languages Supported: English, German, French, Spanish, Italian, Chinese.
• Operating System Compatibility: Windows 7 (64-bit), Windows 8.1/10 (64-bit), Windows Server 2008 R2/2012 R2/2016 (64-bit).
• Contents: Software and documentation on DVD, with a license key on a USB flash drive.
• Status: This product is discontinued, with a successor available (6AV2101-4BB05-0AE5).
• Stock Availability: Limited availability from select distributors.
• Pricing: Varies by distributor and condition (new, surplus, refurbished).
• Shipping: Worldwide express delivery available.