Plug identification DB25 style
Looks like Hirose DX20-50P(55) or DX40-50P-55. Hard to tell from your photo but I think it looks smaller than Centronics. Suggest you check the measurements in the catalog to confirm.



digkey.com Hirose DX20M-50S(50)

digikey.com Hirose DX40-50P-55

mouser.com