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ECSiNG Port Card PCI Express Serial Card PCI Express Serial Extension Adapter PCI-E to RS232 Serial Expansion Card Compa Dual RS232 Ports: Transform a single PCI Express slot into two RS232 (DB9) serial ports, doubling your connectivity optiBest Value GOWENIC 
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StarTech 2-Port PCI Express Serial Card with 16C1050 UART - RS232 [PEX2S1050] MEETS INDUSTRY STANDARDS: The 2-port PCI express serial card is compliant with PCI Express 1.0a specification, and it'sSyba 
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