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