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
Siemens - 6ES79538LL310AA0 - Micro Memory Card 2 mb for Program Backup / Firmware Updates S7-300 Controllers - Allied Electronics & Automation, part of RS Group
6ES7953-8LJ20-0AA0 by SIEMENS - Buy or Repair at Radwell - Radwell.com