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MAX3232 RS232 to TTL Serial Port Converter Module DB9 Connector MAX232
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  • $13.97 
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4 Port RS232 9 Pin Ports Serial PCI Express PCI-E Expansion Card COM DB9 Adapter
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  • $54.63 
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  • $52.63 - $54.63
4 DB-9 serial rs232 ports pcie controller card with 1 TTL port with fan-out cable
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  • $70.48 
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MOSCHIP MCS9904 PCI express 4 ports Serial card PCI-e 1x Multi RS232 DB9 COM port adapter PCIe I/O Card with low profile bracket
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  • $53.11 
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  • $51.11 - $53.11
4 Port RS232 Serial Adapter PCI-e Expansion Card w/ Fan-Out Cable PCI express I/O Card Resettable Fuse Chip SystemBase 16C1054
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  • $68.15 
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  • $66.15 - $68.15
MOSCHIP MCS9904 PCI express 4 ports Serial PCI-e 1x card Multi RS232 DB9 COM port to PCIe I/O Card with low profile bracket
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  • $53.21 
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  • $51.21 - $53.21
4 Port RS232 9 Pin Ports Serial PCI Express PCI-E Expansion Card COM DB9 Adapter
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  • $54.63 
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  • $52.63 - $54.63
4 DB-9 Serial (RS-232) Ports PCI Controller Card with Fan-out Cable, IOC845 Chipset, Support Low Profile Bracket
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  • $68.33 
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  • $66.33 - $68.33
4 Port rs-232 to Pcie controller card 4 DB-9 serial rs232 ports pcie controller card WCH384Lchipset support windows 10
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  • $53.56 
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  • $51.56 - $53.56
4 Port RS232 9 Pin Ports Serial PCI Express PCI-E Expansion Card COM DB9 Adapter
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  • $54.73 
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  • $52.73 - $54.73
PCI-e to 4 Ports RS232 Serial with TTL /5V/12V option PCIE I/O Card Resettable Fuse Chip SystemBase 16C1054
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  • $68.05 
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  • $66.05 - $68.05
Industrial Grade PCI express 4 ports Serial card PCI-e Multi RS232 DB9 COM port adapter 5VDC 12DV power PCIe low profile bracket
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  • $86.99 
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Desktop PCI-E X1 SATA3.0 hard disk expansion card SSD 6-port SATA 6G to PCIE adapter card
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  • $49.99 
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HEXIN Passive RS232 TO RS485 interface converter 232 TO 485 adapter bidirectional adapter
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  • $25.17 
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WISDUM RJ45 to RS232 RS485 RS422 Industrial Male Converter TCP/UDP Serial RS232 RS485 to Ethernet Device Server
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  • $45.47 
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  • $43.47 - $45.47
Mini PCI-Express to 4 Port RS232 DB9 Pin Serial Card Chipset for MosChip MCS9904
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  • $61.74 
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  • $59.74 - $61.74
Mini PCI Express 4 Serial ports Controller card mini PCIe to DB9 RS232 Adapter Card mini PCI-E COM Card MCS9904
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  • $65.78 
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  • $63.78 - $65.78
WISDUM SY-PEX15019 PCI-Express RS-232 Serial 8-Port Card with OXPCIe958 Chipset
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  • $103.50 
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  • $101.50 - $103.50
Raspberry Pi 4 Model B 4 Ports USB HUB HAT for Extension Board USB to UART for Serial Debugging for Raspberry Pi 4 /3B+/Zero W
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  • $32.71 
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  • $30.71 - $32.71
Mini PCIe To 2 RS-232 Ports adapter for Mini ITX motherboard Mini PCI express 2 Serial DB9 Ports Controller Card
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  • $53.49 
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WISDUM USR-TCP232-306 Serial Port RS232/RS485/RS422 to TCP Converter with DHCP and Built-in Webpage with 5V 3A Power Supply (1PCS)
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  • $54.49 
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WISDUM 6 Port RS-232 DB9 Serial PCI-Express 2.0 x1 Card SI-PEX15040
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  • $103.50 
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  • $101.50 - $103.50
Mini PCI express 4 Serial ports Controller card mini PCIe to DB9 RS232 adapter mini PCI-E COM Card MCS9904
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  • $55.22 
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WISDUM 8 Ports RS232 RS485 RS422 to Ethernet TCP/IP Converter Multiple Serial Device Server Switch Modbus Gateway
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  • $167.31 
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WISDUM 2 Port DB9 RS-422 / 485 Serial PCI-Express 2.0 x1 Card (SI-PEX15043)
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  • $103.50 
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WISDUM 8 Ports RS232 RS485 RS422 to Ethernet TCP/IP Converter Multiple Serial Device Server Switch Modbus Gateway
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  • $196.31 
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  • $194.31 - $196.31
WISDUM USR-TCP232-410S Serial to Ethernet Converter Support Modbus RTU & TCP Terminal Power Supply RS232 RS485 to TCP/IP Module
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  • $65.40 
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  • $63.40 - $65.40