The Siemens part number 6AV6381-2CB07-3AX0 refers to the SIMATIC WinCC RC Client V7.3—a runtime and configuration software package. 

Type: Runtime/configuration software

License: Floating license with USB key

Media: DVD + USB flash drive

Languages Supported: German, English, French, Spanish, Italian

Supported Operating Systems:

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

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

Windows Server 2008 R2 + SP1 (64-bit)

Windows Server 2012 (64-bit)

Product Class: A (standard stock item)

Weight: Approx. 0.212 kg

Packaging Dimensions: 18.70 x 27.00 x 3.30 cm

Lifecycle Status: Discontinued as of March 31, 2023, with no direct replacement.