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

Our expansion card range covers everything from data acquisition and serial communication to machine vision, fieldbus integration, and high-speed networking. With PCIe, PCI, and USB options available, these cards provide reliable ways to extend I/O, improve connectivity, and enhance system capability in industrial and embedded applications. Whether you need precise DAQ performance, robust serial interfaces, or advanced frame grabbing for vision systems, our full selection supports scalable and dependable system design.

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

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Showing 60 of 95 Serial Cards items

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Sealevel 3541-KT

4 Port RS-232/422/485 PC/104 Serial Card Kit (C4.104-ULTRA Kit)

1 option available

Advantech PCI-1610C Series

4 Port RS-232 PCI Serial Card – Surge – Isolation Protection

1 option available

Advantech MIC-3955 Series

4 Port RS-232/422/485 3U Compactpci Serial Card

From £413.50 (exc. VAT)

3 options available

Sealevel 7161 Series

16 Port RS-232 PCI Serial Card

2 options available

Sealevel 7106e Series

1 Port RS-232/422/485/530 Low Profile PCI Express Asynchronous Serial Card

From £229.00 (exc. VAT)

2 options available

Sealevel 7106 Series

1 Port RS-232/422/485/530 Low Profile PCI Serial Card

From £437.00 (exc. VAT)

4 options available

Sealevel 7104 Series

1 Port RS-232 Low Profile PCI Serial Card

From £445.00 (exc. VAT)

1 option available

Sealevel 5402e Series

4 Port RS-232/422/485/530/530A/V.35 PCI Express Synchronous Serial Card

From £1,473.00 (exc. VAT)

1 option available

Sealevel 5402 Series

4 Port RS-232/422/485/530/530/V.35 Synchronous Serial PCI Card

From £1,161.50 (exc. VAT)

2 options available

Sealevel 5104e Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Express Synchronous Serial Card

From £584.50 (exc. VAT)

2 options available

Sealevel 5104 Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Synchronous Serial Card

2 options available

Sealevel 5103e Series

1 Port RS-232 Low Profile PCI Express Synchronous Serial Card

From £453.50 (exc. VAT)

Scalable Platforms Designed for Serial Integration

Discover our range of Expandable Embedded PCs.

Serial cards extend the connectivity of your system, while our Expandable Embedded Box PCs provide the right foundation. With multiple expansion slots and ruggedised designs, they ensure reliable performance for a range of industrial applications.

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2 options available

Sealevel 5103 Series

1 Port RS-232 Low Profile PCI Synchronous Serial Card

2 options available

Sealevel 5102e Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Express Synchronous Serial Card

From £534.00 (exc. VAT)

2 options available

Sealevel 5102 Series

1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Synchronous Serial Card

1 option available

Sealevel 7804e Series

8 Port RS-232/422/485 PCI Express Asynchronous Serial Card

1 option available

Sealevel 7804 Series

8 Port RS-232/422/485 PCI Serial Card

4 options available

Sealevel 7803 Series

8 Port RS-232 Low Profile PCI Serial Card

2 options available

Sealevel 7802ec Series

8 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

From £415.50 (exc. VAT)

4 options available

Sealevel 7406e Series

4 Port RS-232 Low Profile PCI Express Asynchronous Serial Card

5 options available

Sealevel 7406 Series

4 Port RS-232 Low Profile PCI Serial Card

From £481.50 (exc. VAT)

1 option available

Sealevel 7404e Series

4 Port RS-232/422/485 PCI Express Asynchronous Serial Card

1 option available

Sealevel 7402e Series

4 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

2 options available

Sealevel 7205ec Series

2 Port RS-232/422/485 Low Profile PCI Express Asynchronous Serial Card

From £253.00 (exc. VAT)

2 options available

Sealevel 7205 Series

2 Port RS-232/422/485 Low Profile PCI Serial Card

From £674.50 (exc. VAT)

2 options available

Sealevel 7204e Series

2 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card

4 options available

Sealevel 7204 Series

2 Port RS-422/485 PCI Serial Card

1 option available

Sealevel 7203e Series

2 Port RS-232/422/485 Isolated PCI Express Asynchronous Serial Card

From £205.00 (exc. VAT)

2 options available

Sealevel 7202 Series

2 Port RS-232 PCI Serial Card

2 options available

Sealevel 7201 Series

2 Port RS-232/422/485 PCI Serial Card

2 options available

Sealevel 7161e Series

16 Port RS-232 PCI Express Asynchronous Serial Card

1 option available

Sealevel 3588 Series

8 Port RS-485 PC/104 Serial Card

1 option available

Sealevel 3540 Series

4 Port RS-232/422/485 PC/104 Serial Card

1 option available

Sealevel 3514 Series

1 Port RS-232/422/485/530/530A/V.35 PC/104+ Synchronous Serial Card

1 option available

Sealevel 3512 Series

1 Port RS-232/422/485/530/530A/V.35 PC/104 Synchronous Serial Card

1 option available

Advantech PCI-1604C Series

2 Port RS-232 PCI Serial Card

From £180.00 (exc. VAT)

1 option available

Advantech PCI-1602B Series

2 Port RS-232/422/485 PCI Serial Card – Surge Protection

From £91.00 (exc. VAT)

1 option available

Advantech PCI-1620A Series

8 Port RS-232 PCI Serial Card

From £116.50 (exc. VAT)

1 option available

Advantech PCI-1610B Series

4 Port RS-232 PCI Serial Card – Surge Protection

From £102.00 (exc. VAT)

1 option available

Advantech PCI-1622C Series

8 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection

From £414.50 (exc. VAT)

1 option available

Advantech PCI-1620B Series

8 Port RS-232 PCI Serial Card – Surge Protection

From £145.00 (exc. VAT)

1 option available

Advantech PCIE-1622B Series

8 Port RS-232/422/485 PCI Express Serial Card – Surge Protection

From £150.00 (exc. VAT)

1 option available

Advantech PCIE-1604B Series

2 Port RS-232 PCI Express Serial Card – Surge Protection

From £74.50 (exc. VAT)

1 option available

Advantech PCIE-1622C Series

8 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection

From £418.50 (exc. VAT)

1 option available

Advantech PCIE-1602C Series

2 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection

From £145.00 (exc. VAT)

1 option available

Advantech PCIE-1604C Series

2 Port RS-232 PCI Express Serial Card – Surge – Isolation Protection

From £149.00 (exc. VAT)

1 option available

Advantech PCIE-1610B Series

4 Port RS-232 PCI Express Serial Card – Surge Protection

From £96.00 (exc. VAT)

1 option available

Advantech PCIE-1612C Series

4 Port RS-232/422/485 PCI Express Serial Card – Surge – Isolation Protection

From £237.50 (exc. VAT)

1 option available

Advantech PCI-1622B Series

8 Port RS-232/422/485 PCI Serial Card – Surge Protection

From £214.50 (exc. VAT)

1 option available

Advantech PCIE-1620A Series

8 Port RS-232 PCI Express Serial Card – Surge Protection

From £119.00 (exc. VAT)

1 option available

Advantech PCIE-1612B Series

4 Port RS-232/422/485 PCI Express Serial Card – Surge Protection

From £132.50 (exc. VAT)

1 option available

Advantech PCI-1612C Series

4 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection

From £357.00 (exc. VAT)

1 option available

Advantech PCI-1612B Series

4 Port RS-232/422/485 PCI Serial Card – Surge Protection

From £143.00 (exc. VAT)

Advantech UIO-4030

UIO40-Express I/O Expansion Card – 1x RS-485 – 1x RS-232 – 4x DI & 4x DO

£45.50 (exc. VAT)

1 option available

Advantech PCI-1602C Series

2 Port RS-232/422/485 PCI Serial Card – Surge – Isolation Protection

From £148.00 (exc. VAT)

3 options available

Moxa CP-114EL-I Series

4 Port Isolated RS-232/422/485 Low Profile PCI Express Serial Card

From £404.50 (exc. VAT)

2 options available

Moxa CB-114 Series

4 Port RS-232/422/485 PC/104+ Module, 0°C to +55°C

From £269.50 (exc. VAT)

2 options available

Moxa CA-104 Series

4 Port RS-232 PC/104 Module, 0°C to +55°C

From £111.00 (exc. VAT)

2 options available

Moxa CP-112UL-I Series

2 Port Isolated RS-232/422/485 Low Profile Universal PCI Serial Card

From £207.00 (exc. VAT)

2 options available

Moxa CP-102U Series

2 Port RS-232 Universal PCI Serial Card, 0°C to +55°C

From £55.50 (exc. VAT)

Showing 60 of 95

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.