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Continue to ChatCommell Mini-PCI Express 4 x RS-232/RS-422/RS-485 Module - MPX-4232 https://www.bvm.co.uk/products/1173-mini-pci-express-4-x-rs-232-rs-422-rs-485-module-mpx-4232/
Commell Mini-PCI Express 4 x RS-232/RS-422/RS-485 Module - MPX-4232 https://www.bvm.co.uk/products/1173-mini-pci-express-4-x-rs-232-rs-422-rs-485-module-mpx-4232/