AntiBreak INPA K+DCAN USB OBD2 Cable for BMW — Manual K‑Line/DCAN Switch, FTDI USB Interface

AntiBreak INPA K+DCAN is a Windows-only USB OBD2 adapter with a manual flip switch that toggles between K-Line (older BMW models) and DCAN (newer BMW models) for full INPA/EDIABAS diagnostic and coding access.

This compact, FTDI-based USB-to-OBD2 interface is built specifically for BMW diagnostic suites such as INPA, EDIABAS, NCS Expert, Rheingold/ISTA, SSS Progman and other workshop tools. It’s designed to provide both legacy K-Line connectivity for pre-2007 vehicles and DCAN support for cars produced after that year, enabling readouts, fault clearing, live data, and module coding when used with compatible Windows software. The adapter requires Windows XP/7/8/10 and works best with antivirus temporarily disabled while installing specialized diagnostic programs.

How does the switch change compatibility with different BMW model years?

The built-in mechanical flip switch reroutes the adapter electronics between K-Line and DCAN signal paths so one cable supports two protocols. Flip one way for K-Line communication common on older BMWs (roughly 1998–2007), and flip the other way for DCAN used on later models (about 2007–2018). This avoids buying separate interfaces for different vehicle generations.

• Manual two-position switch: K-Line vs DCAN
• K-Line setting for older BMW diagnostic ports
• DCAN setting for later CAN-based BMW networks
• Single-cable convenience for multiple model years

What software and operating systems are supported?

This interface is intended for use with Windows desktop operating systems only; official compatibility includes Windows XP, 7, 8 and 10. It is compatible with INPA, EDIABAS, NCSExpert, NCS Dummy, Rheingold/ISTA, SSS Progman, Tool32, WinKFP and many other BMW workshop packages that accept an FTDI USB-serial adapter. Some diagnostic suites require additional drivers or configuration to recognize the adapter correctly.

• Windows XP/7/8/10 supported
• Works with INPA, EDIABAS, NCSExpert, and similar tools
• FTDI 232RL/232RLRQ chipset for reliable USB-serial comms
• May need driver installation and software configuration

How reliable and durable is the cable and electronics?

The cable uses an FTDI USB bridge chip known for stable serial conversion, and the housing protects the switch and connectors during workshop use. Quality construction helps maintain consistent communication during live data sessions, fault scans, and coding operations. Still, treating the cable carefully and avoiding excessive strain on connectors prolongs service life.

• FTDI 232RL / 232RLRQ chipset for stable performance
• Robust molded OBD2 connector and USB plug
• Enclosed switch mechanism to prevent accidental flips
• Designed for routine workshop diagnostic use

Are there installation or security considerations I should know?

Diagnostic software for BMW often triggers antivirus alerts because of low-level system access; temporarily disabling or whitelisting the program may be necessary during installation. The adapter itself requires standard FTDI drivers—install those first, then connect your chosen diagnostic suite. Always follow software source guidance and keep backups of any module settings before making changes.

• Install FTDI drivers before using the cable
• Antivirus may flag installer—temporarily whitelist if needed
• Use official or reputable community diagnostic packages only
• Back up module data before coding or flashing

Who is this for: Technicians, DIY BMW enthusiasts, and independent garages who need a single, affordable interface that supports both legacy K-Line and modern DCAN diagnostics on Windows PCs. If you run INPA/EDIABAS or similar BMW tools and service a range of model years, this switchable USB-OBD2 cable provides a practical, space-saving solution for fault reading, live data monitoring, and basic coding tasks without maintaining multiple adapters.