identify mainboard by Magtron

Magtron Technology Co Ltd [ / 1123]
possibly Magitronic

A-BL532G	40-0400-ZZ1123-00101111-111192-OP495SLC-H
	40-0400-ZZ1123-00101111-111192-OP495SLC-F
	40-0101-zz1123-00101111-111192-umc491-f	UMC 82C491/3
A-B457C	40-0101-zz1123-00101111-060692-opwb4sxb-f