6AV6355-1GA00-0DF2 WinCC OA — driver SINAUT Patch Only Service. Allows the application of publicly available patches. Version upgrade requires the POS version upgrade option. Duration: 12 months. Must be purchased with a corresponding product. Billing takes place annually in advance. Automatic, chargeable extension by 1 year if not canceled 1 month prior to expiration. No hotline support included. The POS conditions apply.