6ES7953 8LJ31 0AA0 6ES7 953 8LJ31 0AA0 SIMATIC S7, MICRO SPEICHERKARTE F. S7 300/C7/ET 200, 3,3 V NFLASH, 512 KB, NEU IM KASTEN|card card|card in a boxcard micro - AliExpress
6ES7954-8LE03-0AA0 | Siemens SIMATIC Speicherkarte für S7-1X00 CPU/SINAMICS | RS
6ES7952-1AS00-0AA0 | Siemens Memory Card for use with S7-400, SIMATIC S7 Series, SIMATIC S7 | RS