Here’s a brief description of the Siemens 6AV2105-2DD02-0AJ0:

• Product Name: SIMATIC WinCC RT Professional
• Powerpack: Upgrades from 512 PowerTags to Professional 512 PowerTags
• Version: V12 (without version change)
• Software Type: Runtime software in TIA Portal
• License: Single license, software and license key downloadable
• Product Class: Class A
• Languages Supported: German, English, French, Spanish, Italian, Chinese
• Operating System Compatibility: Windows XP (32-bit), Windows 7 (32/64-bit), Windows Server 2003 R2/2008 (32-bit), Windows Server 2008 R2 (64-bit)
• Availability: Discontinued; no direct replacement available