6AV6355-1AA50-1FA0Brand: SiemensMPN: 6AV6355-1AA50-1FA0WinCC OA V3.21, IPC Package 256. WinCC OA server license for SIMATIC IPCs (1xx, 2xx, IOT2050, IOT2050SM, ET200 Open Controller series and BX-21A / BX-39A supporRequest a quote