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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 78 Results
2 Port PCI Low Profile RS232 Serial Adapter Card with 16550 UART
PCI2S550_LP
2 Port PCI Low Profile RS232 Serial Adapter Card with 16550 UART

Add 2 high-speed RS-232 serial ports to your low profile/small form factor computer with a PCI expansion slot

$48.99
416+ In stock In stock
US: 377 | CA: 39
In stock Learn More
2 Port USB to RS232 Serial DB9 Adapter Cable
ICUSB232C2
2 Port USB to RS232 Serial DB9 Adapter Cable

Add 2 serial RS-232 ports to any laptop or computer with a USB port

$46.99
375+ In stock In stock
US: 357 | CA: 18
In stock Learn More
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
80+ In stock In stock
US: 72 | CA: 8
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
352+ In stock In stock
US: 346 | CA: 6
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
2 Port ISA RS232 Serial Adapter Card with 16550 UART
ISA2S550
2 Port ISA RS232 Serial Adapter Card with 16550 UART

Add 2 RS232 ports to legacy computer systems through an ISA slot

$49.99
218+ In stock In stock
US: 217 | CA: 1
In stock Learn More
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
329+ In stock In stock
US: 133 | CA: 196
In stock Learn More
1 Port Industrial USB to RS232 Serial Adapter with 5KV Isolation and 15KV ESD Protection
ICUSB232IS
1 Port Industrial USB to RS232 Serial Adapter with 5KV Isolation and 15KV ESD Protection

Add a galvanically isolated RS232 serial port with ESD protection through a USB port - DIN Rail Mountable

$92.99
116+ In stock In stock
US: 90 | CA: 26
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
432+ In stock In stock
US: 410 | CA: 22
In stock Learn More
2S1P PCI Express Serial Parallel Combo Card with Breakout Cable
PEX2S1P553B
2S1P PCI Express Serial Parallel Combo Card with Breakout Cable

Add a parallel port and two RS-232 serial ports to your PC through a PCI-Express expansion slot

$49.99
172+ In stock In stock
US: 145 | CA: 27
In stock Learn More