NEW or Used SIMATIC MMC (Micro Memory Card) for Siemens S7-300/C7/ET 200, RAM 64KB, 6ES7 953-8LF31-0AA0 8LF20 - AliExpress
How to insert siemens memory card to SIMATIC S7 1500 - YouTube
6es7953-8lf30-0aa0 Simatic S7, Micro Memory Card 6es7 953-8lf30-0aa0 For S7-300/c7/et 200, 3.3 V Nflash, 64 Kb, New And In Stock - Tool Parts - AliExpress
How can you use the memory card for the S7-1200 CPU? - ID: 87133851 - Industry Support Siemens