Product code : 6FC5210-0DF20-0AA0 (PCU 50 566MHZ, NT4.0 6FC5210-0DF20-0AA0)
Brand : siemens
SINUMERIK PCU 50 566 MHZ, 128 MB RAM; 24 V DC; WINDOWS NT WORKSTATION V4.0
FOR EMBEDDED SYSTEMS (WINNT4.0 WS EMBSYS)
look to all details: https://mall.industry.siemens.com
and here you will find Similar items: https://www.ugarit-elektrik.com/product-category/siemens-simodrive/