The Siemens part number 6AV6381-2CB07-5AV3 refers to the SIMATIC WinCC RC Client Upgrade Asia from V7.2/V7.3 to V7.5 SP2. It’s a runtime and configuration software upgrade package tailored for WinCC RC clients (excluding RC128). 

Type: Software upgrade (from V7.2/V7.3 to V7.5 SP2)

License: Single license with USB key

Media: 2x DVD + 1x USB flash drive

Languages: Asian language support

Net Weight: Approx. 0.283 kg

Packaging Dimensions: 19.20 x 23.90 x 2.50 cm

Lifecycle Status: Active

Delivery: Physical media (not download-only)