GMSL2 vs GMSL3, FPD-Link III vs IV: The Future of Automotive Video Cables

As ADAS and autonomous driving systems evolve, the demand for faster, more reliable automotive video transmission grows rapidly. Today, GMSL2 and FPD-Link III are the most widely used SerDes technologies for connecting high-resolution cameras to ECUs. But what's next?

Let's look at how GMSL3 and FPD-Link IV are shaping the future of high-speed automotive coaxial cables.

• GMSL2 cables support up to 6 Gbps data rates, PoC (Power over Coax), and long cable runs (~15–20m), making them ideal for surround-view, ADAS, and driver monitoring systems.

• FPD-Link III cables offer up to 4 Gbps and are widely adopted in infotainment and rear-view camera systems.

Both interfaces use coaxial cables with Fakra or H-MTD connectors and provide excellent EMI performance-crucial for the automotive environment.

GMSL3

• Data rates up to 12 Gbps per link
• Lower latency and improved error handling
• Backward compatible with GMSL2
• Targeted at autonomous platforms and ultra-HD sensor integration
• Compatible with next-gen GMSL3 camera cables using upgraded shielding

FPD-Link IV

• Still under development (by Texas Instruments)
• Expected to exceed 8 Gbps, support high-resolution LiDAR and radar fusion
• May integrate multi-channel aggregation for sensor fusion
• Will likely evolve from existing FPD-Link III cable infrastructure

• Shielding and signal integrity will be even more critical
• Expect higher-spec automotive coaxial cables
• Connector types may shift toward miniaturized, high-frequency variants (e.g., HFM, H-MTD)

For OEMs and Tier 1s, forward compatibility and cable flexibility will become key to managing diverse sensor networks.

While GMSL2 and FPD-Link III cables dominate current production vehicles, GMSL3 and FPD-Link IV represent the next leap in high-speed automotive video connectivity. Whether you're sourcing for today's ADAS or tomorrow's autonomous platform, choosing the right cable partner matters more than ever.

Premier Cable offers custom GMSL2, FPD-Link III, and next-gen ready cable assemblies, including Fakra and H-MTD coaxial solutions for automotive camera systems. Designed for performance, built for the future.

GMSL Cable Fakra Female to Female Cable

Quad Fakra Female to Female Cable

Quad Mini Fakra HFM Cable Assembly

HSD Male to Female Automotive Cable

FAKRA Mini HFM Quad to 4 x FAKRA Z Plug

Quad Mini Fakra Male to Female Cable