The Siemens part number 6AV6355-4BA00-0AB0 refers to the WinCC OA – Dongle Standard. This is a hardware USB dongle used to operate licenses that are bound to the dongle itself, rather than to a specific machine. It’s compatible with WinCC OA version 3.17 or higher.

Here’s what it’s typically used for:

Acts as a portable license key for WinCC OA systems.

Can temporarily replace a hardware-bound license on an operator console or server.

Ideal for flexible deployment scenarios or when you need to move licenses between systems.

This dongle is especially handy in development, testing, or mobile environments where license portability is a plus.