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Continue to ChatCervoz Mini-PCI Express 4 x RS-232/422/485 Module - MEC-COM-M134 https://www.bvm.co.uk/products/1047-mini-pci-express-4-x-rs-232-422-485-module-mec-com-m134/
Cervoz Mini-PCI Express 4 x RS-232/422/485 Module - MEC-COM-M134 https://www.bvm.co.uk/products/1047-mini-pci-express-4-x-rs-232-422-485-module-mec-com-m134/