Best Serial Port Cards Deals Online in the UK (25 Deals Found)

Last Updated - 23/09/2026 Sort By:

Best Choice
Sxhlseller

New
Sxhlseller 2 Port PCI Express RS232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit for Linux, PCIe S
2 SERIAL PORTS: PCIE RS232 allows users to add two RS232 BD9 serial ports to desktop computers or industrial equipment t

£11.69 £14.93
StarTech

New
StarTech 2-Port PCI Express RS232 Serial Adapter Card (PEX2S953)
2 PORT SERIAL CARD: Serial controller card w/16950 UART based on ASIX AX99100, allows 2x DB9 ports w/bi-directional RS23

£41.99
New
PCI Express Pcie PCI-E 2-Port Serial RS-232 RS232 COM DB9 Card Adapter Converter
Provides two DB9 RS232 ports. Supports RS232, RS485 & RS422 modes. Serial Port On Chip 256 Byte depth FIFOs in Transmit,

£8.99
Wendry

New
2 Port Low Profile Serial Expansion Card, Standard RS-232 Serial Port, PCI Express to Industrial DB9 RS232 COM Port Adap

£15.71
Used
Dell Sunix Serial Port RS-232 PCI Card Low Profile / 0NT0HM
MONITOR BEZEL OR STAND COLOUR OR DESIGN MAY DIFFER. HOWEVER, THIS DOES'T AFFECT ANY FUNCTIONALITY. SKYTECH SOLUTIONS UK

£9.99
StarTech

New
StarTech 2-Port PCI Express Serial Card, PCI Serial Card (PEX2S1050)
MEETS INDUSTRY STANDARDS: The 2-port PCI express serial card is compliant with PCI Express 1.0a specification, and it's

£46.99
Best Value
Zerone

New
PCI-E to RS232 PCI Express Serial Card 2 Ports Adapter Card for WINDOWS2000/xp/server 2003/xp 64-bit/Vista/7/8/Linux/Dos
Pci-E To Rs232 Pci E Card: PCI-Express rate 2.5Gb/s full duplex channel

£16.81
Used
Socket Serial I/O PC Cards Dual Port (RS-232) (850-00092 G)
COMES AS IS, REF: CD_1

£45.00
StarTech

New
StarTech 1-Port PCI Express RS232 Serial Adapter Card (PEX1S953LP)
1 PORT SERIAL CARD: Serial controller card w/ 16950 UART based on ASIX AX99100, allows 1x DB9 port w/bi-directional RS23

£39.99
Used
MOXA CP-118U V1.1 RS-232/422 8-port serial Card Used
MOXA CP-118U V1.1 RS-232/422 8-port serial Card Used

£104.22
StarTech

New
StarTech 2-Port PCI Express RS232 Serial Adapter Card (PEX2S953LP)
2 PORT SERIAL CARD: Serial controller card w/16950 UART based on ASIX AX99100, allows 2x DB9 ports w/bi-directional RS23

£44.99
StarTech

New
StarTech 2-Port Serial PCIe Card, 16C1050 UART (2S232422485-PC-CARD)
2-PORT PCIE SERIAL CARD: On-board DIP switches allow each DB9 serial port to operate in its own independent mode, enabli

£76.52
New
IDE to SATA Converter Card 3.5" HDD CD Drive Parallel to Serial Port Adapter
Upgrade older IDE devices for use with modern SATA-equipped desktop computers using this IDE to SATA Converter Adapter.

£5.30
StarTech

New
StarTech 4-Port PCI Express RS232 Serial Adapter Card - PCIe RS232 Host Controller - PCIe to Serial DB9-16950 UART - Low
4 PORT SERIAL CARD: Serial controller card w/16950 UART based on ASIX AX99100, allows 4x DB9 ports w/bi-directional RS23

£98.53
Used
Dell Low Profile Serial/COM Port Card - SUNIX SUX-SER6427AL - PCI-E 1X
For sale Dell Low Profile Serial/COM Port Card - SUNIX SUX-SER6427AL - PCI-E 1X Fully tested

£6.51
StarTech

New
StarTech PCI Serial Parallel Combo Card, PCI Combo Adapter Card (PCI2S1P2)
PCI CARD WITH SERIAL & PARALLEL PORTS: Using one PCI bus, add a DB25 parallel & two DB9 RS232 ports to your computer; Se

£30.90
Used
Exsys EX-41094 REV.C 4 x RS-232 Serial & 25 Pin Parallel Port PCI Adapter Card
Exsys Model Number:EX-41094 REV.C. Model: Exsys EX-41094 REV.C 4. MPN: Exsys EX-41094 REV.C 4 x RS-232 Serial. Compatibl

£24.99
New
PCIe 2 Port RS232 Serial Card DB9 16Mbps Controller WCH382 Low Profile Bracket
To use RS-485/RS-422, you would need external level converters. The included CD contains drivers for Windows (XP through

£15.99
Used
Dell Low Profile Serial/COM Port Card - SUNIX SUX-SER6427AL - PCI-E 1X
🔌Model: SUNIX SUX-SER6427AL. ✔ Dell Low Profile Serial / COM Port Card (SUNIX SUX-SER6427AL). 💻Dell Low Profile Serial

£5.99
Refurbished
Brainboxes 4 X Serial Card Rs232 Serial Port PCIE with Fast Data Transfer Green
Brainboxes 4 X Serial Card Rs232 Serial Port PCIE with Fast Data Transfer Green.

£8.49 £49.99
New
Pick Two Serial Ports Add On Card. PCI to 2x VGA
Pick Two Serial Ports Add On Card. PCI to 2x VGA. Condition is New. Shipped with Royal Mail Tracked 48.

£9.97
New
Dynamode PCI to Serial 2-port Controller Card (PCI-RS232-2) Not PCIE
Used parts have been tested before sale.

£12.98
New
StarTech 1-port RS232 Serial DB9 Adapter Card Host Controller PCIe PEX1S953LP
This PCIe to serial adapter supports the following features Host interface PCIe. Expansion card standard PCIe 1.1. Outpu

£18.99
New
2-Port PCI Serial Card Adapter RS232 9-Pin COM Ports 115.2Kbps Windows 7/XP
Wide Compatibility: Supports 32-bit PCI slots running at 33MHz, compliant with PCI Standard 2.3. Enhance your legacy dev

£13.99
Used
Brainboxes PM-020 RS232 PC Card
Core Specs • Interface / Form-factor: Type II PCMCIA card • Serial port: 1 × RS-232 (9-pin DB9 connector) NOT SUPPLIE

£13.99

25 Serial Port Cards deals are available from: Amazon, eBay stores, starting from £5.30.
The biggest discount we found is 22% on Sxhlseller 2 Port PCI Express RS232 DB9 Serial Port Card for Windows XP, Vista,7, 8.x, 10, 11 32/64bit for Linux, PCIe Serial Expansion Card PCIe Serial Host Controller Card at Amazon.
The lowest price we found is £5.30 while the highest is £104.22.
Prices for the best Serial Port Cards deals average at £29.18.
Last updated on September 23, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Serial Port Cards.