https://www.nuget.org/packages/NModbus4.Serial/1.0.0-alpha1
NuGet Gallery | NModbus4.Serial 1.0.0-alpha1
NModbus4.Serial Class Library
nuget galleryserial 10alpha1
https://www.startech.com/en-ca/cards-adapters/icusb2321fis
8.3ft (2.5m) 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation, USB to RS232...
8.3ft (2.5m) 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation, USB to RS232 Adapter - TAA
https://www.startech.com/en-us/cards-adapters/cb1s485
1 Port CardBus PCMCIA RS422 RS485 Serial Laptop Adapter Card
1 Port CardBus PCMCIA RS422 RS485 Serial Laptop Adapter Card
1 portcardbus pcmcialaptop adapterrs422rs485