This SD card is part of the Modicon M340 range, a range of programmable logic controllers (PLCs). This SD memory card is an accessory for the M340 processor. It is equipped with a memory capacity of 8 MB. It supports a class B10 transparent web server. This memory card is compatible with Modicon M340 BMXP342010, BMXP342000, BMXP341000, BMXP342030, BMXP342020 process module and BMXPRA0100 peripheral remote I/O adapter. The SD card is inserted in the front slot provided with a protective flap. This card is designed to back up the two memory areas in the internal RAM of the processor module. The data is automatically backed up by duplication when the programmable logic controller (PLC) is turned off.