identify mainboard by Rectron
Rectron [R2 / 1139]
RT-5TI
2A59CR2CC-00
RT-512
2A59CR2BC-00
??
2A59CR29C-01
sold as KM-T5-2
RT-5SI 550X
2A5ICR2AC-00
??
2A5IAR21-01
sold as Terminator 80486PCI
Arstoria AS496
SIS-496-497/A/B-2A4IBR2CC-00
SiS 85C496 497
3PCI 4ISA 4SIMM72
??
2A4IBR22C-00
Terminator
2A4IBR21
RT-4S3
2A4IB000C-00
SiS 85C496/497
OEM of Jamicon KM-S4-1
??
2A4X5R21-00