The Siemens part number 6AV6381-2BP07-3AV0 refers to WinCC system software V7.3 Asia, RC 2048. 

Type: Runtime/Configuration software

License: Floating license with USB license key

PowerTags: Supports up to 2048

Languages: English, Simplified Chinese, Traditional Chinese, Korean, Japanese

Compatible OS:

Windows 7 Professional/Enterprise/Ultimate SP1 (32/64-bit)

Windows 8.1 Standard/Professional/Enterprise/Ultimate (64-bit)

Windows Server 2008 R2 SP1 (64-bit)

Windows Server 2012 (64-bit)

Delivery contents: 1 DVD + 1 USB flash drive

Product status: Discontinued as of March 31, 2023, with no direct replacement