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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 64 Results
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
USB-C to Serial Adapter with COM Retention
ICUSB232PROC
USB-C to Serial Adapter with COM Retention

Add a serial port with this USB C to serial with COM port retention

$32.99
1908+ In stock In stock
US: 1859 | CA: 49
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
1976+ In stock In stock
US: 1953 | CA: 23
In stock Learn More
4 Port RS232 Mini PCI Express Serial Card w/ 16650 UART
MPEX4S552
4 Port RS232 Mini PCI Express Serial Card w/ 16650 UART

Add Four RS232 Serial Ports to an Embedded System through a mini PCI Express Slot

$117.99
325+ In stock In stock
US: 323 | CA: 2
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
226+ In stock In stock
US: 129 | CA: 97
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
44+ In stock In stock
US: 38 | 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
39+ In stock In stock
US: 37 | CA: 2
In stock Learn More
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
113+ In stock In stock
US: 87 | CA: 26
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
81+ In stock In stock
US: 56 | CA: 25
In stock Learn More
Micro USB to RS232 DB9 Serial Adapter Cable for Android with USB Charging - M/M
ICUSBANDR232
Micro USB to RS232 DB9 Serial Adapter Cable for Android with USB Charging - M/M

Add an RS232 serial port to your Android smartphone or tablet device through Micro USB with USB charging capabilities

$41.99
97+ In stock In stock
US: 86 | CA: 11
In stock Learn More