Siemens 6GK1900-0AB10 Connector C, removable data storage medium For easy device replacement in the event of a fault, for recording configuration or engineering and application data, can be used in the following SIMATIC NET products with connector C slot: SCALANCE XC-200, XP-200, XM-400, XR-500, M-800, W-700, SC-600 and S615.