6FC5357-0BB34-0AA0
NCU 573.4 650MHZ 64MB 6FC5357-0BB34-0AA0

From SIEMENS

SINUMERIK 840D/DE NCU 573.4, 650 MHZ, 64 MB WITHOUT SYSTEM SOFTWARE MEMORY: NC 2.5 MB, PLC 96 KB PREPARED FOR PROFIBUS DP

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