3mk Hardy HDMI 2.1 Cable 0.5m Ultra High Speed 48Gbps 8K60Hz 4K120Hz eARC VRR ALLM Black

Modern displays demand more bandwidth than ever, and a substandard cable can bottleneck your entire setup with flickering, dropouts, or capped resolutions. The 3mk Hardy HDMI 2.1 cable eliminates that weak link, delivering the full 48 Gbps throughput required for uncompressed 8K video, high-frame-rate 4K gaming, and advanced audio formats. At just 0.5 metres, it is perfect for connecting devices in tight spaces—behind a wall-mounted TV, inside a media cabinet, or between a console and a nearby monitor—without excess cable clutter.

Who is it for

This cable is built for enthusiasts who refuse to compromise: gamers pushing 4K at 120 Hz with VRR and ALLM for tear-free, low-latency play; home cinema owners wanting eARC for lossless Dolby Atmos and DTS:X; and professionals working with 8K video or high-refresh-rate displays. It is equally suited to connecting an AV receiver, soundbar, projector, or next-gen console.

Main features

• Ultra High Speed HDMI 2.1 certification with 48 Gbps bandwidth
• Supports 8K@60Hz and 4K@120Hz for crystal-clear, fluid motion
• Enhanced Audio Return Channel (eARC) for object-based audio formats
• Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) for gaming
• Dynamic HDR and HDCP 2.3 for optimal picture quality and content protection
• Short 0.5 m length reduces signal degradation and clutter
• Backward compatible with HDMI 2.0b, 2.0a, 2.0, and 1.4 devices

Specifications

• HDMI Standard: HDMI 2.1
• Cable Type: Ultra High Speed HDMI Cable
• Bandwidth: 48 Gbps
• Max Resolution: 8K (7680 x 4320) @ 60 Hz, 4K (3840 x 2160) @ 120 Hz
• Connectors: HDMI Type A Male to HDMI Type A Male
• Audio: eARC, supports Dolby Atmos, DTS:X
• Gaming Features: VRR, ALLM, Quick Frame Transport (QFT)
• HDR: Dynamic HDR, Source Based Tone Mapping (SBTM)
• HDCP: 2.3
• Additional: HDMI Ethernet Channel (HEC)
• Colour: Black
• Length: 0.5 m

Tips

For the best 8K or 4K120 experience, ensure both your source and display support HDMI 2.1 and that the cable is firmly seated. This short cable is ideal for direct connections; if you need longer runs, consider an active optical HDMI cable to maintain signal integrity. Keep the cable away from sharp bends and high-interference devices to preserve performance.