Industrial Serial Cards & Adaptors

Browse industrial serial cards and adaptors designed to add RS-232, RS-422, and RS-485 connectivity to industrial computers, embedded systems, and workstations. This category includes single and multi-port solutions across bus interfaces such as PCI, PCI Express, PC/104, CompactPCI, and Mini PCIe, making it suitable for both legacy integration and modern system expansion. Use the filters to narrow by bus type, serial interface, port count, manufacturer, and specification to find the right serial card or adaptor for your application.

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Showing 0 of 110 Serial Cards & Adaptors items

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2 options available

Moxa CP-168U Series

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

From £153.50 (exc. VAT)

2 options available

Moxa CP-118U Series

8 Port RS-232/422/485 Universal PCI Serial Card, 0°C to +55°C

From £330.50 (exc. VAT)

3 options available

Moxa CP-104EL-A Series

4 Port RS-232 Low Profile PCI Express Serial Card

From £163.00 (exc. VAT)

3 options available

Moxa CP-114EL Series

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

From £197.00 (exc. VAT)

1 option available

Moxa CP-102EL Series

2 Port RS-232 Low Profile PCI Express Serial Card

From £96.50 (exc. VAT)

2 options available

Moxa CP-102N Series

2 Port RS-232 Mini PCI Express Serial Card

From £124.00 (exc. VAT)

2 options available

Moxa CP-102U Series

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

From £55.00 (exc. VAT)

2 options available

Moxa CP-102UL Series

2 Port RS-232 Low Profile Universal PCI Serial Card

From £62.00 (exc. VAT)

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2 options available

Moxa CP-104JU Series

4 Port RS-232 Low Profile Universal PCI Serial Card: RJ45 Ports, 0°C to +55°C

From £117.50 (exc. VAT)

3 options available

Moxa CP-104UL Series

4 Port RS-232 Low Profile Universal PCI Serial Card

From £103.50 (exc. VAT)

2 options available

Moxa CP-112UL Series

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

From £117.00 (exc. VAT)

2 options available

Moxa CP-112UL-I Series

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

From £206.50 (exc. VAT)

3 options available

Moxa CP-114EL-I Series

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

From £403.50 (exc. VAT)

4 options available

Moxa CP-114UL Series

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

From £191.50 (exc. VAT)

4 options available

Moxa CP-114UL-I Series

4 Port Isolated RS-232/422/485 Low Profile Universal PCI Serial Card, 0°C to +55°C

From £424.00 (exc. VAT)

1 option available

Moxa CP-116E-A Series

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

From £755.00 (exc. VAT)

1 option available

Moxa CP-118E-A-I Series

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

From £826.50 (exc. VAT)

1 option available

Moxa CP-118EL-A Series

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

From £384.50 (exc. VAT)

2 options available

Moxa CP-118U-I Series

8 Port Isolated RS-232/422/485 Universal PCI Serial Card, 0°C to +55°C

From £764.50 (exc. VAT)

1 option available

Moxa CP-132EL Series

2 Port RS-422/485 Low Profile PCI Express Serial Card – DB9M cable

From £117.50 (exc. VAT)

2 options available

Moxa CP-132UL Series

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

From £93.50 (exc. VAT)

2 options available

Moxa CP-132UL-I Series

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

From £207.00 (exc. VAT)

3 options available

Moxa CP-134EL-A-I Series

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

From £394.00 (exc. VAT)

1 option available

Moxa CP-134U Series

4 Port RS-422/485 Universal PCI Serial Card – 15kV ESD Protection

From £185.50 (exc. VAT)

4 options available

Moxa CP-134U-I Series

4 Port Isolated RS-422/485 Universal PCI Serial Card – 15kV ESD Protection

From £428.00 (exc. VAT)

1 option available

Moxa CP-138E-A-I Series

8 Port Isolated RS-422/485 PCI Express Serial Card – 4kV Surge Protection

From £714.50 (exc. VAT)

2 options available

Moxa CP-138U-I Series

8 Port Isolated RS-422/485 Universal PCI Serial Card, 0°C to +55°C

From £619.50 (exc. VAT)

2 options available

Moxa CP-138U Series

8 Port RS-422/485 Universal PCI Serial Card, 0°C to +55°C

From £312.00 (exc. VAT)

1 option available

Moxa CP-168EL-A Series

8 Port RS-232 PCI Express Serial Card

From £209.00 (exc. VAT)

1 option available

Advantech PCIE-1602B Series

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

1 option available

Advantech PCIE-1602C Series

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

1 option available

Advantech PCIE-1604B Series

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

1 option available

Advantech PCIE-1604C Series

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

1 option available

Advantech PCIE-1610B Series

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

1 option available

Advantech PCIE-1612B Series

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

1 option available

Advantech PCIE-1612C Series

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

1 option available

Advantech PCIE-1620A Series

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

1 option available

Advantech PCIE-1622B Series

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

1 option available

Advantech PCIE-1622C Series

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

3 options available

Moxa POS-104UL Series

4 Port RS-232 Low Profile PCI Serial Card – Power Over Serial

From £115.00 (exc. VAT)

1 option available

Advantech PCI-1602B Series

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

1 option available

Advantech PCI-1602C Series

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

1 option available

Advantech PCI-1604C Series

2 Port RS-232 PCI Serial Card

1 option available

Advantech PCI-1610B Series

4 Port RS-232 PCI Serial Card – Surge Protection

1 option available

Advantech PCI-1610C Series

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

1 option available

Advantech PCI-1612B Series

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

1 option available

Advantech PCI-1612C Series

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

1 option available

Advantech PCI-1620A Series

8 Port RS-232 PCI Serial Card

1 option available

Advantech PCI-1620B Series

8 Port RS-232 PCI Serial Card – Surge Protection

1 option available

Advantech PCI-1622B Series

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

1 option available

Advantech PCI-1622C Series

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

2 options available

Moxa CA-114 Series

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

From £184.00 (exc. VAT)

4 options available

Moxa CA-132/132I Series

2 Port RS-422/485 PC/104 Module

From £123.50 (exc. VAT)

2 options available

Moxa CA-134I Series

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

From £334.50 (exc. VAT)

2 options available

Moxa CA-108 Series

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

From £184.00 (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 CB-134I Series

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

From £441.00 (exc. VAT)

2 options available

Moxa CB-114 Series

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

From £269.00 (exc. VAT)

2 options available

Moxa CB-108 Series

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

From £248.50 (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)

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 3588 Series

8 Port RS-485 PC/104 Serial Card

Sealevel 3541-KT

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

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

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

1 option available

Sealevel 7404e Series

4 Port RS-232/422/485 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)

1 option available

Sealevel 7402e Series

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

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

3 options available

Sealevel 7161 Series

16 Port RS-232 PCI Serial Card

2 options available

Sealevel 7108 Series

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

From £636.00 (exc. VAT)

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

Moxa OPT 8B+ Series

VHDCI 68 to 8x DB25(M) Connection Box

Moxa OPT8-RJ45

DB62(M) to 8 X RJ45 (8-Pin) Connection Box

Moxa OPT8-M9

DB62(M) to 8x DB9(M) Connection Box

Moxa OPT8-M9+

VHDCI 68 to 8x DB9(M) Connection Box

Moxa NP21103

DB25 Terminal Block Kit for RS-422/485

Moxa OPT 8S

DB62(M) to 8x DB25(F) Connection Box: Surge Protection

Moxa OPT 8B

DB62(M) to 8x DB25(M) Connection Box

Moxa OPT 8A

DB62(M) to 8x DB25(F) Connection Box

Showing 60 of 110

Frequently Asked Questions

Learn More About Serial Cards & Adaptors

A serial card is usually installed internally into a host system through an expansion bus such as PCI, PCIe, PC/104, CompactPCI, or Mini PCIe. A serial adaptor is typically used where serial connectivity needs to be added in a more flexible or interface-specific way. Together, these products provide different ways to expand serial communications depending on the host platform and installation method.

A serial card is the right choice when serial ports need to be added directly to the host computer rather than placing the connected device onto an Ethernet network. This makes serial cards and adaptors a strong fit for industrial PCs, workstations, and embedded platforms that need fixed local serial connectivity for connected equipment.

Industrial serial expansion products are available for a range of bus architectures including CompactPCI, PC/104, PCI, PCIe, and Mini PCIe. This makes the category suitable for both newer systems and older embedded or industrial platforms that still rely on established expansion standards.

Serial cards and adaptors are available in both single-port and multi-port formats. Depending on the model, they can provide anything from a single additional serial interface through to higher-density expansion for applications that need multiple RS-232, RS-422, or RS-485 ports within one system.

The main things to check are the host bus interface, required serial standard, port count, and whether the installation needs additional protection or special features. Some models support only RS-232, while others support RS-232, RS-422, and RS-485 in one product. Depending on the application, features such as isolation, surge protection, or power over serial may also be important.