Dongguan Suntecc Technology Co., Ltd.

PCIe 5.0 & 6.0 GPU Riser Cables - FAQ

Part One: For General Users and Gamers

Q1: What is a PCIe 5.0/6.0 extension cable? How is it different from what I have seen before?
A: This is a high-performance extension cable designed specifically for the new generation of PCIe standards. Compared to PCIe 3.0/4.0 extension cables, it has been fully upgraded in terms of materials and design, using ultra-low-loss cables and more precise impedance control to ensure stable operation at the high bandwidth of PCIe 5.0/6.0 (up to 256 GT/s), avoiding black screen, performance degradation, or blue screen issues caused by signal attenuation. In short, it is the "standard" connection cable for high-performance graphics cards and motherboards in the future.

Q2: My motherboard is PCIe 4.0, can I use your PCIe 5.0/6.0 extension cable?
A: Absolutely, and it's an excellent choice! The PCIe standard is backward compatible. Our extension cable will work more stably and comfortably in the PCIe 4.0 environment, providing ample performance space for your future upgrade to PCIe 5.0 or 6.0 platforms, making it a one-time investment with long-term benefits.

Q3: Will using an extension cable cause performance loss on the graphics card?
A: Using a low-quality or mismatched extension cable can indeed cause performance loss. However, our PCIe 5.0/6.0 extension cables are precisely designed and rigorously tested to minimize signal attenuation. Under proper installation and configuration, the performance loss is negligible, which you can verify through tests like 3DMark.

Q4: Why do I get a black screen or fail to recognize the graphics card after using your extension cable?
A: Please follow these troubleshooting steps:

1. Check the connections: Ensure that both ends of the extension cable (motherboard end and graphics card end) are fully inserted and securely locked.
2. BIOS settings: This is the most common cause. Enter the motherboard BIOS, find the PCIe-related settings (usually under "Advanced" or "Boot" options), and manually set the PCIe rate mode (PCIe Speed/Link Speed) of the corresponding slot from "Auto" to "Gen4" or "Gen5" (choose according to the highest generation supported by your motherboard and graphics card). This is because "Auto" mode may not correctly identify the connected device during initialization.
3. Update BIOS: Ensure your motherboard BIOS is up-to-date to get the best compatibility support.

Q5: How to choose the length of the extension cable? Does different length affect performance?
A: Theoretically, the longer the cable, the greater the signal attenuation. We offer various lengths (such as 15cm, 20cm, 30cm) to meet different cases' cable management needs. For most ATX/M-ATX cases, 20cm-25cm is the most universal and recommended length, ensuring signal integrity while providing sufficient cable management space. If you pursue ultimate performance, choosing a shorter model is a safer option, provided it meets your cabling requirements.

Q6: Does this extension cable support vertical mounting of the graphics card?
A: Of course it does! This is one of the main purposes of a graphics card extension cable. Our cables are flexible and durable, easily bendable to adapt to various vertical mounting brackets and case spaces, allowing you to perfectly showcase your beloved graphics card.

Part Two: For Professional Customers, Brand Owners, and System Integrators

Q7: What are the key technologies of your PCIe 5.0/6.0 extension cables in terms of signal integrity?
A: We focus on high-end extension cable solutions, and our key technologies include:

• Ultra-low-loss dielectric materials: Using high-quality materials as cable insulation, we control signal loss (Insertion Loss) within the PCI-SIG specification requirements, even exceeding the standard.
• Precision impedance control: Strictly maintaining differential impedance within 85Ω ±5% (the PCIe standard requires 85Ω), ensuring consistent signal transmission, reducing reflections and jitter.
• Double shielding design: Each wire core is independently shielded with aluminum foil and high-density tin-plated copper mesh, effectively resisting external electromagnetic interference (EMI) and preventing internal signal crosstalk, ensuring stability in complex case environments.
• High-quality connectors: Using branded PCIe interface connectors (such as Amphenol, Molex, Lotes), ensuring high plugging and unplugging life and stable electrical contact.

Q8: Has the product been certified by PCI-SIG? Are there related compliance test reports?
A: Compliance is our foundation. Our product design fully complies with the PCI-SIG PCI Express® Card Electromechanical (CEM) specification. Although PCI-SIG does not directly certify cables, we have our own laboratory to conduct comprehensive testing on finished products, including:

• S-parameter testing (VNA): Providing complete Insertion Loss (insertion loss), Return Loss (return loss), Crosstalk (crosstalk) data reports.
• Bit Error Rate (BER) testing: Conducting long-term stress tests at PCIe 5.0/6.0 speeds to ensure BER is below the industry standard of 10^{-12}.
• Eye diagram testing (Eye Diagram): Demonstrating signal quality, proving it has sufficient timing and voltage margin.
• All related test reports can be provided upon request to certified customers.

Q9: We pay attention to the stability and consistency of bulk supply. How does your company ensure product quality control?
A: We have a full-process quality control system from raw materials to finished products:

• Incoming Quality Control (IQC): Sampling electrical performance and dimensional testing for each batch of cables and connectors.
• In-Process Quality Control (IPQC): 100% inspection of critical processes such as crimping quality and shielding layer treatment during assembly.
• Final Quality Control (FQC/OQC): 100% power-on function testing of finished products to ensure each extension cable can light up and recognize the graphics card. For high-end models, we also perform sampling high-precision S-parameter testing.

Q10: Do you support customization services (OEM/ODM)? For example, specific lengths, colors, connector angles, brand logos, etc.?
A: This is one of our core businesses. We are very willing to provide in-depth customization services for brand customers and system integrators, including:

• Customization of cable length, color, and sleeve material (such as nylon mesh, metal braided mesh).
• Customization of connector angles (such as right angle, reverse right angle) to accommodate special cases or server designs.
• Custom branding, such as laser engraving on connectors, custom packaging, etc.
• Customized electrical performance testing plans and reports based on your specific needs. Please contact us through business channels, and our engineering team will coordinate with you for specific requirements.

Q11: What is the minimum order quantity (MOQ) and delivery cycle?
A: The MOQ for standard products is low, suitable for sample acquisition and small-batch procurement. For customized projects, the MOQ will be determined based on the complexity of the customization. The delivery time for standard products is usually 7-15 working days, while customized projects require additional assessment of development and production time. We will always strive to provide flexible and efficient supply chain support.