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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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.

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