SIEMENS SIMATIC S7-400 SERIES,S7-400 process controller
SIMATIC S7-400 Process Controller – Naksh Technology
Siemens 6ES74081TA006AA0 Spare Fan, For Use With SIMATIC S7-400 CPU and 6ES7 408-1TA00-0XA0, 6ES7 408-1TA01-0XA0 and 6ES7 408-1TB00-0XA0 Fan Subassembly (Mature Manufacturer Status)
Amazon.com: 6ES7417-4XT05-0AB0 SIMATIC S7-400 CPU 417-4 CPU 6ES74174XT050AB0 New in Box with Warranty : Electronics