The converter is a USB2.0 interface, for USB1.1. 1pc 2 in 1 USB to 485 USB to 422 Converter Adapter. All at a glance. Board with three indicators. One is the power indicator: USB normal power light (red), one computer via USB to 422 (485), and then send out the data indicator (red), there is a 422 (485) to receive data computer uploading data received indicator (green) light.
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