Siemens 6ES7953-8LL20-0AA0 is a SIMATIC Micro Memory Card (MMC) with a 2 MB capacity designed for the S7-300 family, including C7 and ET200 MMC configurations. This removable memory card plugs into SIMATIC S7-300 CPUs and ET200 MMC interfaces to provide non-volatile storage for program blocks and data. The model is a dedicated MMC card for S7-300 systems, with the exact order number 6ES7953-8LL20-0AA0.
