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PCIE 1x to 4-port 2-port RS232 serial card, 2-port 4-port expansion card, desktop computer universal COM card
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  • $38.79 
  • Free Shipping
Ethernet Network Serial Port Converter RJ45 to RS232 RS485 RS422 Industrial Device Server Support TCP/RTU/UDP with Power Cable
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  • $45.99 
  • Free Shipping
Socket Comm D-I/O Ruggedized Dual Serial Port PC Card PCMCIA
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  • $290.99 
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IO CREST 8 Port Serial DB9 RS-232 PCI Controller Card RDC C6238 Chipset SI-PCI15068
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  • $72.99 
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4-Port RS-232 Serial PCI-E (w/Both Regular & LP Brackets) (SER6456A+L)
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  • $216.99 
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StarTech.com 2-Port USB-C Hub with Gb Ethernet and RS232 FTDI Serial, Attached USB-C to USB-A Dongle, 100W PD Pass-Through, 2x USB-A 5Gbps
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StarTech.com 2-Port USB-C Hub with Gb Ethernet and RS232 FTDI Serial, Attached USB-C to USB-A Dongle, 100W PD Pass-Through, 2x USB-A 5Gbps
  • Part Number: 5G2A1SGBB-USB-C-HUB
  • Network Media: Data Transfer Rate: 640 MB/s
  • Uplink Ports: USB Version: 3.2 Gen 1 Total Number of USB Ports: 3 Number of Network (RJ-45) Ports: 1 USB Connector Type: Type-C Type-A
  • Uplink Interface: Host Interface: USB 3.2 (Gen 1) Type C USB 3.2 (Gen 1) Type A
  • Model #: 5G2A1SGBB-USB-C-HUB
2-Port PCI Express RS-232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, PCIE RS232 Card, PCIE Serial DB9 Port Card (PCIE-SE2)
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  • $53.99 
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Conceptronic 4 Port DB9-RS232 Serial PCIe Card
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  • $194.99 
  • Free Shipping
Syba SY-PEX15019 PCI-Express RS-232 Serial 8-Port Card with OXPCIe958 Chipset
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  • $109.99 
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Syba 2 Port DB9 RS-422/485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
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  • $99.99 
  • Free Shipping
8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card SI-ADA15071
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  • $108.99 
  • Free Shipping
8 Serial Port DB9 RS232 PCIe Riser Card PCI-Express X1 Expansion Card Adapter High Speed 920KB with Heat Sink Chip ASIX AX9900
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  • $62.96 
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IO CREST 4 Port RS-232 Serial PCIe 2.0 X1 Controller Card Components SI-PEX15042
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  • $103.99 
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IO CREST 6 Port RS-232 DB9 Serial PCI-Express 2.0 x1 Card SI-PEX15040
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IO CREST 6 Port RS-232 DB9 Serial PCI-Express 2.0 x1 Card SI-PEX15040

Limited time offer, ends 08/15

  • Model #: C7FK-OYS-2026.7.28-744
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  • $97.99 
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IO CREST 6 Port RS-232 DB9 Serial PCI-Express 2.0 x1 Card SI-PEX15040
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IO CREST 6 Port RS-232 DB9 Serial PCI-Express 2.0 x1 Card SI-PEX15040

Limited time offer, ends 08/15

  • Model #: C7FK-OYS-2026.7.28-53
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  • $97.99 
  • Free Shipping
LINDY 2 Port RS-232 Serial and 1 Port Parallel Card PCI Express (51188)
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  • $119.99 
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4-port RS-232 PCI Express Serial Low Profile Board with Power Output (SATA Power Socket)
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  • $148.99 
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PCI to 8x Serial Port RS232 DB9 COM Expansion Card I/O Controller Riser Adapter Chipset Systembase 16C1058 with Output Cable
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  • $69.96 
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Vszerda Dual Port PCI Express RS-232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit and Linux PCs, PCIE 2X DB9 Card
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  • $31.99 
  • Free Shipping