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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 60 of 110 Serial Cards & Adaptors items

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OPT 8B+

VHDCI 68 to 8x DB25(M) Connection Box

OPT8-RJ45

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

OPT8-M9+

VHDCI 68 to 8x DB9(M) Connection Box

OPT8-M9

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

OPT 8S

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

OPT 8B

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

OPT 8A

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

NP21103

DB25 Terminal Block Kit for RS-422/485

DB116-ROHS

Sealevel DB116-ROHS

DB9 Male to RJ45 - Preconfigured for 4161/4163 (RS-232)

Sealevel DB113-ROHS

DB9 Male to DB9 Female Low Profile Null Modem Adapter

DB112-ROHS

Sealevel DB112-ROHS

DB9 Female to RJ45 - Preconfigured for 7107 (RS-485)

DB111-ROHS

Sealevel DB111-ROHS

DB9 Female to RJ45 Modular Adapter (RS-485 Pinout) for SeaI/O Modules

DB109-ROHS

Sealevel DB109-ROHS

DB9 Female to RJ45 Modular Adapter (RS-232 Pinout) for SeaI/O Modules

Sealevel DB104-ROHS

DB25 Female (RS-422) to DB9 Female (Opto 22 Optomux) Converter

Sealevel DB103-ROHS

DB9 Female (RS-422) to DB9 Female (Opto 22 Optomux) Converter

Sealevel 3541-KT

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

Sealevel 7205ec

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

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

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

2 Port RS-422/485 PCI Serial Card

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

2 Port RS-232 PCI Serial Card

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

16 Port RS-232 PCI Express Asynchronous Serial Card

16 Port RS-232 PCI Serial Card

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

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

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

1 Port RS-232 Low Profile PCI Serial Card

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

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

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

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

8 Port RS-232 Low Profile PCI Serial Card

Sealevel 7802ec

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

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

4 Port RS-232 Low Profile PCI Serial Card

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

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

8 Port RS-485 PC/104 Serial Card

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

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

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

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

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

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

1 Port RS-232 Low Profile PCI Synchronous Serial Card

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

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

Advantech PCI-1610C

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

2 Port RS-232 Low Profile Universal PCI Serial Card

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

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

Moxa CA-132/132I

2 Port RS-422/485 PC/104 Module

Moxa CP-114EL-I

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

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

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

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

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

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

Showing 60 of 110

Case Studies

Customised fanless PCs installed in the control room of the world's oldest underground railway

The engineers who look after the Bakerloo and Metropolitan signalling and control room systems wanted to upgrade the control room display systems with new computers in order to replace aging 19" rack PCs with smaller form factor fanless computers.

Read more