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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.
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1 Port ExpressCard to RS232 DB9 Serial Adapter Card w/ 16950 - USB Based
EC1S232U2
1 Port ExpressCard to RS232 DB9 Serial Adapter Card w/ 16950 - USB Based

Add a USB-based RS232 Serial port to your laptop through an ExpressCard slot

$47.99
140+ In stock In stock
US: 110 | CA: 30
In stock Learn More
1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART
EC1S952
1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART

Add a high-speed RS-232 Serial port to your laptop computer via an ExpressCard expansion slot

$71.99
84+ In stock In stock
US: 32 | CA: 52
In stock Learn More
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
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
Industrial RS232 to RS422/485 Serial Port Converter with 15KV ESD Protection
IC232485S
Industrial RS232 to RS422/485 Serial Port Converter with 15KV ESD Protection

Convert an RS232 data signal to either RS485 or RS422 with this wall-mountable, ESD-protected adapter

$91.99
131+ In stock In stock
US: 127 | CA: 4
In stock Learn More
RS232  to TTL Serial Converter -  DB9, F/M
IC232TTL
RS232 to TTL Serial Converter - DB9, F/M

Easily convert an RS232 serial signal (-12 to +12V) to a transistor-transistor logic signal (0 to +5V)

$45.99
564+ In stock In stock
US: 479 | CA: 85
In stock Learn More
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
8-Port USB-to-Serial Adapter Hub
ICUSB23208FD
8-Port USB-to-Serial Adapter Hub

Convert a single USB port into eight serial ports, and connect multiple hubs together for a scalable solution

$268.99
41+ In stock In stock
US: 28 | CA: 13
In stock Learn More
3 ft 1s1p USB to Serial Parallel Port Adapter Cable
ICUSB2321284
3 ft 1s1p USB to Serial Parallel Port Adapter Cable

Add one RS232 Serial, and one IEEE 1284 Parallel port to your computer through a single USB connection

$37.99
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
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