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COM Port Card Serial Port Card  RS-232/422/485 PCI-1612 REV: A1
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  • $139.39 
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TTL to , Serial Port to Slave Module, Instead of TSS721A, Signal Isolation
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  • $24.96 
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1pcs HL-340 USB to RS232 COM Port Serial PDA 9 pin DB9 Cable Adapter Support 7 64
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  • $12.99 
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CH341T Two-In-One Module USB to IIC UART USB to TTL Single-Chip Serial Port Downloader
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  • $15.53 
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Mini Board CH9143 BLE/USB/UART three-way transmission serial port TTL module debugging
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  • $15.98 
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Serial Port Card Connection Cable One To Four OPT4A-AE
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  • $125.45 
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Multi serial port card 4-port RS-422/485 PCI CP-134U V2
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  • $153.32 
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RS-422/485 Serial Port Card Communication Card PCL-745 REV B1
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  • $191.66 
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CP-132I PCI Multi-Serial Card 2-Port RS-422/485
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  • $186.48 
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Communication card isolation protection serial port card VXC-142iAU
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  • $166.11 
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Serial Port Card RS-422/485 2 Ports  PCI-1602UP B1
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  • $204.44 
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ESP8266 serial port remote control WIF module ESP-12E
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  • $21.25 
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Industrial Grade PCI-E Serial Port Expansion Card UT-792I
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  • $94.29 
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CH9111L6T USB2.0 High-Speed TTL Serial Port Module  CH9111L6T-EVT-R1
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  • $20.74 
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16C1058 8-Port Serial PCI card with fan out cable PCI to 8 RS232 DB9 Ports converter Industrial IO card
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  • $113.37 
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  • $111.77 - $113.37
For Advantech Communication Card 2-Port RS-422/485 ISA Serial Card PCL-745 REV.B1
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  • $229.52 
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