Industrial Expansion Cards for I/O, Networking, Vision and More

Upgrade your embedded or industrial computing system with our broad range of Expansion Cards, built to extend functionality across multiple applications. From DAQ and motion control to high-speed networking and image acquisition, these cards offer reliable performance in demanding environments.

We supply everything from serial and USB expansion cards to frame grabbers, fieldbus interfaces, and network adaptors, with form factors and bus support including PCI, PCIe, PC/104, and MiniPCIe.

Need help choosing the right expansion card? Get in touch with our friendly team to match the right card to your application.

Enquire Now
Expansion Cards

Showing 95 of 95 Serial Cards items

Filter your results
Clear Filters
  • Availability
  • Manufacturer
  • Bus
  • Serial
      • to
  • Serial Interface
  • Transmission type
5104e
Sealevel 5104e
1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Express Synchronous Serial Card
£584.50
5402
Sealevel 5402
4 Port RS-232/422/485/530/530/V.35 Synchronous Serial PCI Card
£1,161.50
7161
Sealevel 7161
16 Port RS-232 PCI Serial Card
7161e
Sealevel 7161e
16 Port RS-232 PCI Express Asynchronous Serial Card
7204
Sealevel 7204
2 Port RS-422/485 PCI Serial Card
7803
Sealevel 7803
8 Port RS-232 Low Profile PCI Serial Card
7804
Sealevel 7804
8 Port RS-232/422/485 PCI Serial Card
MIC-3955
Advantech MIC-3955
4 Port RS-232/422/485 3U Compactpci Serial Card
£413.50
PCI-1602B
3 in stock
Advantech PCI-1602B
2 Port RS-232/422/485 PCI Serial Card – Surge Protection
£86.50
PCI-1602C
Advantech PCI-1602C
2 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection
£140.00
PCI-1604C
Advantech PCI-1604C
2 Port RS-232 PCI Serial Card
£171.00
PCI-1622B
Advantech PCI-1622B
8 Port RS-232/422/485 PCI Serial Card – Surge Protection
£203.00
PCI-1622C
Advantech PCI-1622C
8 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection
£412.00
PCIE-1602B
4 in stock
Advantech PCIE-1602B
2 Port RS-232/422/485 PCI Express Serial Card – Surge Protection
£88.00
PCIE-1602C
Advantech PCIE-1602C
2 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection
£137.50
7404e
Sealevel 7404e
4 Port RS-232/422/485 PCI Express Asynchronous Serial Card
PCIE-1604B
Advantech PCIE-1604B
2 Port RS-232 PCI Express Serial Card – Surge Protection
£70.50
PCIE-1604C
Advantech PCIE-1604C
2 Port RS-232 PCI Express Serial Card – Surge – Isolation Protection
£141.00
PCIE-1610B
Advantech PCIE-1610B
4 Port RS-232 PCI Express Serial Card – Surge Protection
£91.00
PCI-1610B
Advantech PCI-1610B
4 Port RS-232 PCI Serial Card – Surge Protection
£97.00
PCI-1610C
Advantech PCI-1610C
4 Port RS-232 PCI Serial Card – Surge – Isolation Protection
PCI-1612B
Advantech PCI-1612B
4 Port RS-232/422/485 PCI Serial Card – Surge Protection
£135.50
PCI-1612C
Advantech PCI-1612C
4 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection
£338.50
PCI-1620A
Advantech PCI-1620A
8 Port RS-232 PCI Serial Card
£110.50
PCI-1620B
Advantech PCI-1620B
8 Port RS-232 PCI Serial Card – Surge Protection
£136.50
CP-118U
4 in stock
Moxa CP-118U
8 Port RS-232/422/485 Universal PCI Serial Card, 0°C to +55°C
£322.00
PCIE-1612B
Advantech PCIE-1612B
4 Port RS-232/422/485 PCI Express Serial Card – Surge Protection
£125.50
PCIE-1612C
Advantech PCIE-1612C
4 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection
£225.00
PCIE-1620A
Advantech PCIE-1620A
8 Port RS-232 PCI Express Serial Card – Surge Protection
£112.50
PCIE-1622B
Advantech PCIE-1622B
8 Port RS-232/422/485 PCI Express Serial Card – Surge Protection
£147.50
PCIE-1622C
Advantech PCIE-1622C
8 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection
£396.50
7804e
Sealevel 7804e
8 Port RS-232/422/485 PCI Express Asynchronous Serial Card
CP-118EL-A
5 in stock
Moxa CP-118EL-A
8 Port RS-232/422/485 PCI Express Serial Card
£375.00
CP-118E-A-I
2 in stock
Moxa CP-118E-A-I
8 Port RS-232/422/485 Isolated PCI Express Serial Card – 4kV Surge Protection
£806.00
CP-104EL-A
13 in stock
Moxa CP-104EL-A
4 Port RS-232 Low Profile PCI Express Serial Card
£159.00
Expanding Your Connectivity
Serial cards add RS-232, RS-422 or RS-485 ports to a computer. These ports are still widely used in industrial automation, control systems and legacy equipment. Adding a card allows modern PCs to connect directly with older hardware.

Made for Industrial Reliability
The cards are designed to deliver stable communication even in environments with electrical noise or vibration. Isolation options help protect both the card and connected equipment. This level of robustness makes them dependable for continuous operation.

Easy to Integrate Into Your System
Cards can be ordered on their own or supplied as part of a complete computer build. They come with full documentation and driver support to simplify installation. This ensures reliable communication without lengthy setup or troubleshooting.