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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.
41 to 50 of 73 Results
6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention
ICUSB422
6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention

Add an RS422/485 serial port to your system through USB; features COM port retention

$71.99
23+ In stock In stock
US: 20 | CA: 3
In stock Learn More
1 Port USB to RS232 DB9 Serial Adapter with Detachable 6ft USB A to B Cable
ICUSB232D
1 Port USB to RS232 DB9 Serial Adapter with Detachable 6ft USB A to B Cable

Add an RS232 serial port to your laptop or desktop computer through a detachable USB cable

$17.99
62+ In stock In stock
US: 62 | CA: 0
In stock
4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART
PEX4S553
4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART

Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot

$114.99
8 Port PCI Express Low Profile Serial Adapter Card
PEX8S950LP
8 Port PCI Express Low Profile Serial Adapter Card

Add 8 RS-232 serial ports to your computer via a single low profile PCI Express slot

$213.99
3+ In stock In stock
US: 0 | CA: 3
In stock Learn More
4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART
PEX4S952
4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART

Add four RS232 serial ports to any PC using a single PCI Express expansion slot

$120.99
2+ In stock In stock
US: 0 | CA: 2
In stock Learn More
USB-C to Serial Adapter
ICUSB232C
USB-C to Serial Adapter

Connect an RS232 (DB9) peripheral to your USB-C device

$25.99
2224+ In stock In stock
US: 2199 | CA: 25
In stock Learn More
8 Port USB to RS232 Serial DB9 Adapter Hub
ICUSB2328
8 Port USB to RS232 Serial DB9 Adapter Hub

Add eight RS232 serial ports to any notebook or desktop computer using a single USB port

$215.99
105+ In stock In stock
US: 99 | CA: 6
In stock Learn More
2 Port PCI RS422/485 Serial Adapter Card with 161050 UART
PCI2S4851050
2 Port PCI RS422/485 Serial Adapter Card with 161050 UART

Add two RS422/485 serial ports through a standard or low profile PCI expansion slot

$113.99
81+ In stock In stock
US: 78 | CA: 3
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
126+ In stock In stock
US: 99 | CA: 27
In stock Learn More
24in Internal USB Motherboard Header to 2 Port Serial RS232 Adapter
ICUSB232INT2
24in Internal USB Motherboard Header to 2 Port Serial RS232 Adapter

Add two RS232 serial ports to any system with an available USB motherboard header

$66.99
245+ In stock In stock
US: 98 | CA: 147
In stock Learn More