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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.
31 to 40 of 63 Results
4 Port PCI RS232 Serial Adapter Card with 16550 UART
PCI4S550N
4 Port PCI RS232 Serial Adapter Card with 16550 UART

Add 4 high-speed RS-232 serial ports to your PC through a PCI expansion slot

$70.99
141+ In stock In stock
US: 133 | CA: 8
In stock Learn More
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
46+ In stock In stock
US: 30 | CA: 16
In stock Learn More
4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention
ICUSB2324X
4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention

Add 4 serial RS-232 ports to any laptop or computer with a USB port

$109.99
63+ In stock In stock
US: 59 | CA: 4
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

$92.99
85+ In stock In stock
US: 69 | CA: 16
In stock Learn More
2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART
PEX2S5531P
2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART

Add 1 parallel port and 2 RS-232 serial ports to your standard or low-profile computer through a PCI Express expansion slot

$49.99
149+ In stock In stock
US: 126 | CA: 23
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
333+ In stock In stock
US: 305 | CA: 28
In stock Learn More
Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation
ICUSB422IS
1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation

Add an R422/485 serial port to your laptop or desktop computer through USB

$130.99
31+ In stock In stock
US: 13 | CA: 18
In stock Learn More
4 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub - 15kV ESD Protection
ICUSB234854I
4 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub - 15kV ESD Protection

Add four ports supporting three serial protocols, to easily connect serial devices to your computer through USB, with 15kV ESD protection

$253.99
66+ In stock In stock
US: 6 | CA: 60
In stock Learn More
8-Port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Card - 16C1050 UART - Low Profile Serial DB9 Controller/Expansion Card - 15kV ESD Protection - Windows/Linux
$213.99
16+ In stock In stock
US: 6 | CA: 10
In stock Learn More
4 Port USB to RS232 Serial DB9 Adapter Hub
ICUSB2324
4 Port USB to RS232 Serial DB9 Adapter Hub

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

$97.99
4+ In stock In stock
US: 0 | CA: 4
In stock Learn More