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Serial Cards & Adapters

If you're looking for a simple, cost-effective way to connect serial devices in your industrial application or server room, our Serial Cards and Adapters make it easy to add Serial ports (RS-232, RS-422, RS-485 etc.) to your computer through common expansion ports such as PCI and PCI Express, as well as through USB.
71 to 78 of 78 Results
2-Port Dual Voltage WHQL Approved Serial Card with Legacy Port Remap Function
$53.99
83+ In stock In stock
US: 9 | CA: 74
In stock Learn More
4 Port PCI Express (PCIe) RS232 Serial Card w/ Power Output and ESD Protection
PEX4S553S
4 Port PCI Express (PCIe) RS232 Serial Card w/ Power Output and ESD Protection

Add four ESD-Protected RS232 ports, with 5V or 12V selectable power output through a PCI Express slot

$150.99
2+ In stock In stock
US: 2 | CA: 0
In stock
2 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
EC2S952
2 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART

Add 2 high-speed RS-232 Serial ports to your notebook computer via an ExpressCard slot

$87.99
2+ In stock In stock
US: 2 | CA: 0
In stock
2 Port PCI Express RS232 Serial Adapter Card with 16950 UART
PEX2S950
2 Port PCI Express RS232 Serial Adapter Card with 16950 UART

Add 2 RS232 serial ports to your standard or small form factor computer through a PCI Express expansion slot

$62.99
16 Port Rackmount FTDI USB to Serial COM Adapter Hub - RS232 Multiplexer
ICUSB23216F
16 Port Rackmount FTDI USB to Serial COM Adapter Hub - RS232 Multiplexer

Convert a Single USB Port into 16 RS232 Serial Ports in a Hardened Industrial-grade Rack-mountable Chassis

$399.99
RS-232 to RS485/422 Serial Converter
IC485S
RS-232 to RS485/422 Serial Converter

Convert an RS232 data signal to either RS485 or RS422

$49.99
4 Port ExpressCard RS232 Serial Card Adapter with 16950 UART
EC4S950
4 Port ExpressCard RS232 Serial Card Adapter with 16950 UART

Add four RS232 Serial ports to your laptop computer via an ExpressCard expansion slot

$49.99
11+ In stock In stock
US: 10 | CA: 1
In stock Learn More
PCI Express RS232 Serial Adapter Card with 16950 UART (Native Chipset)
PEX1S952
1 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART

Add an RS232 Serial port through a PCI Express expansion slot

$51.99