9Pin DB9 Solderless Terminal Female/ Male RS232 RS485 Adapter Connector
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25-pin Opto-Isolated RS232 to RS485 / RS422 Converter (Industrial / Po – CommFront
USB 2.0 to RS-232 / RS-422 / RS-485 Selectable Industrial Serial Adapter w/ 15kV ESD Surge Protection - Coolgear
UOTEK Mini RS-232 to RS-485 Converter RS232 To RS485 Conversion Adapter DB9 Connector Bidirectional Transmission UT-2201 - Newegg.com
USB To RS485 Adapter, Adapter Cable Compatible With RS232 RS485 RS422 Standards USB To RS485 Converter, For Data Transmission - Walmart.com
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