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FOR USB Serial Port CH340 CP2102 to TTL/ RS485/ RS232 Full Interoperability
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  • $24.30 
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RS232 SP3232 TTL to RS232 Module RS232 to TTL Brush Line Serial Port Module
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  • $18.90 
  • Free Shipping
PCI-E PCI to Dual Serial DB9 RS232 Serial Controller 2-Port Adapter Card Express
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  • $17.19 
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3.3V UART serial to RS485 SP3485 Transceiver Converter Communication Module
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  • $18.90 
  • Free Shipping
FOR Dual 2 ports Serial 9 pin DB9 RS232 Motherboard Com Ribbon Cable slot Bracket
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  • $17.50 
  • Free Shipping
FOR PCIe to 2 Ports DB9 RS232 Serial DB25 LPT Converter card AX99100 Chipset
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  • $29.70 
  • Free Shipping
3232 RS232 to TTL Serial Port Converter Module DB9 Connector 232
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  • $15.90 
  • Free Shipping