06/06/2023 by Kvaser

Introducing a hardware-silent CAN to USB interface for sensitive and safety-critical systems

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Kvaser is pleased to introduce the USBcan Pro 4xCAN Silent, a compact, four-channel CAN/CAN FD to USB real-time interface that is always silent on the CAN bus (‘listen only’). This CAN interface is made silent through hardware and thus, cannot transmit on bus.

Standard CAN interfaces receive and transmit CAN messages, enabling them to be used to configure the system to which they are connected. However, certain customers, particularly those developing highly sensitive autonomous or safety-critical systems, require CAN interfaces capable of listening only, so that the interface has no impact on the bus or surrounding systems. Listen-only interfaces are also used to prevent any application or third-party, such as a hacker, from impacting the CANbus and its related systems through the Kvaser device.

“The Kvaser USBcan Pro 4xCAN Silent was designed in close collaboration with several customers who wanted the highest performance and highest certainty from their CAN interfaces. While the Kvaser USBcan range provides software-controlled silent mode, the customers in question wanted the guarantee of zero unwanted effects that only a hardware-implemented silent CAN interface can bring to the final test and validation stage of safety-critical systems,” said Ludvig Wallander, Kvaser’s Director of Product Development.

The Kvaser USBcan Pro 4xCAN Silent handles reception of standard and extended CAN messages on the CAN/CAN FD bus with a high timestamp precision. With a standard USB connector at one end and four CAN channels in a single 26-pin HD D-sub CAN connector at the other, it includes a high quality four-channel breakout cable with 9-pin D-sub connectors to connect with ease to separate CAN networks.

High-performance, yet compact, the Kvaser USBcan Pro 4xCAN Silent features Kvaser MagiSync, automatic time synchronization to achieve accurate and precise time stamping between multiple interfaces connected to one host computer. The Kvaser USBcan Pro 4xCAN Silent is compatible with applications that use Kvaser‘s CANlib, the software API common to all Kvaser hardware.

For more information on the Kvaser USBcan Pro 4xCAN Silent interface, please click the link below.

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Support and Availability
The Kvaser USBcan Pro 4xCAN Silent interface is available now with free software, free software updates and free support. Visit for resources to help users get started with their devices quickly, including our Quick Start Guides for all products, Kvaser’s Developer Blog and Video tutorials.