Industrial Serial Cards and Adaptors for System Expansion

Expand your system’s connectivity with our wide range of industrial serial cards and adaptors. Available in single and multi-port configurations, these boards support popular bus interfaces including PCI, PCI Express, PC/104, and Mini PCIe, making them ideal for both legacy integration and modern embedded applications.

If you're adding RS-232, RS-422, or RS-485 ports to a workstation or embedded PC, our serial cards offer reliable, high-performance communication in demanding environments.

Not sure which interface you need? Our technical specialists are here to help.

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Serial Cards & Adaptors

Showing 110 of 110 Serial Cards & Adaptors items

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7402e
Sealevel 7402e
4 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card
7406e
Sealevel 7406e
4 Port RS-232 Low Profile PCI Express Asynchronous Serial Card
7406
Sealevel 7406
4 Port RS-232 Low Profile PCI Serial Card
£481.50
7802ec
Sealevel 7802ec
8 Port RS-422/485 Low Profile PCI Express Asynchronous Serial Card
£415.50
5402e
Sealevel 5402e
4 Port RS-232/422/485/530/530A/V.35 PCI Express Synchronous Serial Card
£1,473.00
7104
Sealevel 7104
1 Port RS-232 Low Profile PCI Serial Card
£445.00
7106
Sealevel 7106
1 Port RS-232/422/485/530 Low Profile PCI Serial Card
£437.00
5103
Sealevel 5103
1 Port RS-232 Low Profile PCI Synchronous Serial Card
5103e
Sealevel 5103e
1 Port RS-232 Low Profile PCI Express Synchronous Serial Card
£453.50
5104
Sealevel 5104
1 Port RS-232/422/485/530/530A/V.35 Low Profile PCI Synchronous Serial Card
7201
Sealevel 7201
2 Port RS-232/422/485 PCI Serial Card
7202
Sealevel 7202
2 Port RS-232 PCI Serial Card
7203e
Sealevel 7203e
2 Port RS-232/422/485 Isolated PCI Express Asynchronous Serial Card
£205.00
7106e
Sealevel 7106e
1 Port RS-232/422/485/530 Low Profile PCI Express Asynchronous Serial Card
£229.00
7108
1 in stock
Sealevel 7108
1 Port RS-232/422/485 Isolated Low Profile PCI Serial Card
£636.00
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
Why Use Serial Cards in Modern Systems?
Many new PCs and servers no longer include native serial ports. Expansion cards restore this capability, allowing engineers to continue using equipment that depends on RS-232, RS-422 or RS-485 connections.

How Do Adaptors Add Flexibility?
Adaptors provide quick conversion between different serial standards or between USB and serial. This makes it simple to connect a variety of legacy devices without needing to reconfigure or replace existing hardware.

What Benefits Do Industrial Models Offer?
Compared to office-grade products, industrial cards and adaptors feature stronger isolation, extended temperature support and reinforced components. These features ensure long service life in demanding environments such as manufacturing and utilities.