Requirements for HDMI and DP Cables for the DC500 4K Fuser -Ensuring Proper Cable Specifications Is the Key to Stable 4K Output


1. Basic Connection Requirements

Before operating the DC500 4K Fuser, users must ensure all signal cables are firmly connected to the graphics card’s output ports. Improper or loose connections, especially when mistakenly connected to the motherboard’s integrated video port, may lead to the device failing to output 4K signals or causing unstable image performance. Verifying physical connection integrity is the first and most essential step.

2. HDMI Cable Specification Requirements

To ensure stable high-bandwidth signal transmission, HDMI cable specifications must meet the DC500’s 4K/High-Refresh output requirements. Users should distinguish between the following standards:

- HDMI 2.1 FRL 48Gbps(Full Bandwidth)—Recommended
Provides sufficient bandwidth for all 4K output modes supported by the DC500, ensuring optimal performance.

- HDMI 2.1 FRL 24Gbps
Limited compared with the full 48Gbps version; may restrict certain high-frame-rate modes.

-HDMI 2.1 TMDS 18Gbps(HDMI 2.0)
Bandwidth is significantly lower; may cause black screen, flickering, reduced resolution, or failure to output at 4K high-refresh modes.

To achieve stable and consistent results, the recommended cable is HDMI 2.1 FRL 48Gbps.

3. DP Cable Specification Requirements

DisplayPort cables must meet the minimum bandwidth threshold required by the DC500:

-DP 1.4 — Minimum Requirement
Supports 4K output and meets the DC500’s base transmission needs.

- DP 1.2 — Not Supported
Bandwidth insufficient for 4K operation; using DP 1.2 cables will result in output limitations or no signal.

- DP 2.1 — Recommended for Enhanced Stability
Fully backward-compatible with DP 1.4, offers improved signal quality, and is suitable for long-term use or future display hardware upgrades.

4. Summary of Cable Requirements

To ensure the DC500 4K Fuser performs within its designed specifications:

-Cables must be securely connected to the graphics card.

-HDMI cables must support sufficient FRL bandwidth, with 48Gbps recommended.

-DP cables must be DP 1.4 or above, with DP 2.1 providing superior stability.

Using compliant and certified cables is essential for maintaining reliable 4K output and overall system stability.



DICHEN DC500 4K Fuser HDMI 2.1 + DP 1.4 dual interface -Support 1920*1080P/480HZ,2560*1440P/ 320HZ,3840*2160P/ 160HZ

Back to blog