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USB 2.0 to RS485 RS 485 DB9 COM Serial Port Device Converter Adapter Cable High Speed PL2303 USB2.0 5Mbp Cord 70cm Dropship|Computer Cables & Connectors| - AliExpress
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How to distinguish RS-232 and RS-422 and RS-485? (Source: STC Electronic Hong Kong Co., Limited) | PRUnderground
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