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  RS232 adapters  (738 offers of 5,842,425 product items)

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Brainboxes US-757 2 Port RS232 USB-C to Serial Adapter (1 offer) 
USB-C to Serial adapter providing two RS232 ports. Data transfer rates up to 921,600 baud rates. The 128 byte transmit and 384 byte receive FIFOS, coupled with 1Mbit line drivers deliver uncompromi...
BrainBox
US-757
from £ 22.94*
per piece
 
 piece
StarTech.com 6ft (1.8m) 1-Port Professional USB to Serial Adapter Cable with COM Retention, USB to RS232 Adapter - TAA (11 offers) 
Add one serial RS-232 port with com retention to any laptop or computer with a USB port The ICUSB2321X Professional grade USB Serial Adapter cable converts a USB 2.0 port into an RS232 serial port ...
StarTech.com
ICUSB2321X
from £ 29.18*
per piece
 
 piece
Brainboxes XC-235 interface cards/adapter Serial (1 offer) 
ExpressCard providing one port RS232 where absolute compatibility with classic desktop serial COM ports is a necessity. ExpressCard is 34mm wide and fits 34mm or 54mm slots. Guaranteed low latency,...
BrainBox
XC-235
from £ 110.03*
per piece
 
 piece
StarTech.com 2 Port PCI RS232 Serial Adapter Card with 16550 UART (4 offers) 
Add 2 high-speed RS-232 serial ports to your PC through a PCI expansion slot The PCI2S550 2 Port 16550 Serial Card can be installed in an available PCI slot to add two RS232 serial ports to your sy...
StarTech.com
PCI2S550
from £ 20.23*
per piece
 
 piece
StarTech.com 8.3ft (2.5m) 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation, USB to RS232 Adapter - TAA (8 offers) 
Add an RS232 serial port with circuit isolation to your laptop or desktop computer, through USB The ICUSB2321FIS 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation converts an ava...
StarTech.com
ICUSB2321FIS
from £ 101.77*
per piece
 
 piece
Lenovo COM Expansion Card interface cards/adapter Internal RS-232 (2 offers) 
The ThinkCentre Tiny COM Expansion Card with BTB Connector extend COM port for selected PCs through BTB connector.
Lenovo
4XH1K25073
from £ 13.35*
per piece
 
 piece
VALUE PCI Adapter, 2 Serial RS232, D-SUB 9 Port (2 offers) 
Expand your PC with two serial ports - Supports: Windows 95 / 98SE / NT 4.0 / ME / 2000 / XP - Contents: I/O Card, Driver CD, Manual
VALUE
15.99.2086
from £ 17.94*
per piece
 
 piece
StarTech.com 6ft (1.8m) 2-Port FTDI USB to Serial RS232 Adapter Cable with COM Retention, USB to RS232 Adapter - TAA (11 offers) 
Add two RS232 serial ports with COM retention to your laptop or desktop computer through USB The ICUSB2322F 2-Port USB to Serial RS232 Adapter Cable with FTDI chipset and COM Retention converts an ...
StarTech.com
ICUSB2322F
from £ 45.64*
per piece
 
 piece
StarTech.com 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention (10 offers) 
Add RS232, RS422 and RS485 support to your laptop or desktop computer via USB The ICUSB2324852 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention lets you connect every type of seria...
StarTech.com
ICUSB2324852
from £ 87.57*
per piece
 
 piece
StarTech.com 4 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable (12 offers) 
Add 4 DIN Rail-mountable RS232 Serial ports to any system through USB The ICUSB2324I 4-Port Industrial USB to Serial Hub with DIN Rail Clips converts a single USB port into four RS232 serial ports,...
StarTech.com
ICUSB2324I
from £ 94.76*
per piece
 
 piece
StarTech.com 8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable (10 offers) 
Add 8 DIN Rail-mountable RS232 Serial ports to any system through USB The ICUSB2328I Industrial 8-Port USB to Serial Hub with DIN Rail Clips converts a single USB port into eight RS232 serial ports...
StarTech.com
ICUSB2328I
from £ 161.37*
per piece
 
 piece
StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Dual Serial DB9 Card - 16550 UART - Expansion Card - Windows & Linux (11 offers) 
Add 2 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9...
StarTech.com
PEX2S553
from £ 32.67*
per piece
 
 piece
StarTech.com 3ft (91cm) 1-Port USB to Serial Cable, DB9/DB25 RS232 to USB Converter, Prolific, USB to Serial Adapter (14 offers) 
Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable The ICUSB232DB25 USB to RS232 DB9/DB25 Serial Adapter Cable (M/M) lets you connect 9-pin (DB9) o...
StarTech.com
ICUSB232DB25
from £ 13.99*
per piece
 
 piece
StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART (11 offers) 
Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot The PEX4S553 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART lets y...
StarTech.com
PEX4S553
from £ 75.01*
per piece
 
 piece
StarTech.com 4 Port RS232 PCI Serial Card Adapter with Power Output (1 offer) 
Add 4 RS232 serial ports with 5V or 12V selectable power output to your computer, through a PCI slot The PCI4S954PW 4-Port PCI Serial Card (with Power Output) turns a PCI slot into 4 RS232 (DB9) se...
StarTech.com
PCI4S954PW
from £ 99.28*
per piece
 
 piece
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