The Siemens part number 6AV6381-2CB07-4AK3 refers to the SIMATIC WinCC RC Client Upgrade from V7.X to V7.4 SP1. It’s a downloadable software package designed for upgrading existing WinCC RC clients (excluding RC128) to version 7.4 SP1. Here’s a quick overview:

Type: Runtime/configuration software upgrade

License: Single license (software and license key download only)

Languages: Typically includes major European languages

Delivery: Download only (no physical media); consignee email required

Net Weight: Approx. 0.001 kg

Lifecycle Status: Phased out as of March 31, 2023