Siemens - 6ES79538LJ310AA0 - Micro Memory Card 512 kB for Program Backup S7-300 Controllers - Allied Electronics & Automation, part of RS Group
Siemens 6ES79538LF310AA0 SIMATIC S7 Flash-EPROM Micro Memory Card, For Use With SIMATIC S7-300/C7/ET 200 Controller, 24 mm W x 1.4 mm D x 32 mm H | State Electric
Used Simatic Mmc 128kb Micro Memory Card For Siemens S7-300/c7/et 200, Ram 128kb, 6es7 953-8lg11-0aa0 - Add On Cards & Controller Panels - AliExpress
Siemens 6ES7953-8LG31-0AA0 S7 Nflash Micro-Memory Card, For Use With SIMATIC S7-300/C7/ET 200 Series CPU, 32 mm H x 24 mm W x 1.4 mm D | State Electric