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PCIe 4.0 x4 Male Up R/A to x1 Female Down R/A Extension Cable
P4-X4MUR-X1FDR PCIe 4.0 x4 Male Up R/A to x1 Female Down R/A Extension Cable
 
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Availability: Typically within 2 Business Days


Product Code: P4-X4MUR-X1FDR


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Description
 

PCIe 4.0 x4 Male Up R/A to x1 Female Down R/A Extension Cable

The PCIe 4.0 x4 Male Up R/A to x1 Female Down R/A Extension Cable is a high-performance hybrid-orientation passive adapter solution engineered for complex routing challenges in next-generation computing systems, test platforms, and space-constrained environments. This cable adapts a larger PCIe 4.0 x4 slot interface to a smaller PCIe x1 slot interface, combining an Up Right-Angle (Up R/A) male connector for low-profile insertion in obstructed motherboard slots and a Down Right-Angle (Down R/A) female connector to accommodate vertical clearance needs beneath add-in cards. Supporting PCIe 4.0 specifications with a data transfer rate of 16.0 GT/s per lane, it provides a bandwidth of approximately 2 GB/s for the x1 interface while maintaining backward compatibility with PCIe 3.0/2.0/1.0 devices. Engineered with precision 85-ohm impedance-matched wiring  and multi-layer EMI shielding, this hybrid-orientation cable ensures signal integrity at high speeds. The dual right-angle design addresses complex routing challenges in dense servers, test benches, or custom PC builds where multi-directional obstruction avoidance and airflow optimization are critical.

Features

  • Hybrid Right-Angle Orientation: Combines an Up R/A male connector for accessible insertion in obstructed motherboard slots and a Down R/A female connector to minimize vertical profile beneath connected devices, enabling complex cable routing around obstacles in all three dimensions within cramped spaces .
  • PCIe 4.0 Compliance: Supports PCIe 4.0 specifications with a data transfer rate of 16.0 GT/s per lane, providing a bandwidth of ~1.969 GB/s for x1 configurations while ensuring backward compatibility with PCIe 3.0/2.0/1.0 devices.
  • Enhanced Signal Integrity: Utilizes low-loss twin-axial cables (e.g., 31 AWG, as referenced in 3M's designs for PCIe 4.0 applications ) with multi-layer shielding (foil and braid) to minimize insertion loss, crosstalk, and electromagnetic interference (EMI), ensuring stable performance even at 16.0 GT/s data rates.
  • Form Factor Adaptation: Enables physical and electrical compatibility between PCIe x4 and x1 interfaces, allowing x1 devices to be installed in x4 slots with optimized space utilization.
  • Passive Design: Requires no external power or active components, relying on high-quality copper conductors and precise impedance control to maintain signal integrity over extended lengths.
  • Durable Construction: Incorporates gold-plated contacts (e.g., min. 0.76µm thickness, per PCI-SIG standards ) and robust connector housings to withstand mechanical stress in commercial environments. The right-angle connectors include reinforced strain relief to prevent damage during installation in tight spaces.

Specifications

  • Product Model: PCIe 4.0 x4 Male Up R/A to x1 Female Down R/A Extension Cable
  • Connector A: PCIe 4.0 x4, Male, Up Right-Angle (Up R/A)
  • Connector B: PCIe 4.0 x1, Female, Down Right-Angle (Down R/A)
  • Connector Gender: Male to Female
  • Cable Type: Passive Copper Extension Cable
  • Pinout Configuration: Standard PCIe-compliant with x4 to x1 lane mapping
  • Cable Length: Standard options: 0.25m, 0.5m (Custom lengths up to 1.0m available; beyond may require validation for signal integrity) 
  • Data Rate Support: Up to 16.0 GT/s (PCIe 4.0)
  • Supported Protocols: PCI Express 4.0/3.0/2.0/1.0
  • Impedance: 85 ohms (differential, compliant with PCIe 4.0 standards) 
  • Wire Gauge: 31 AWG (high-precision copper, typical for PCIe 4.0 low-loss applications) 
  • Shielding: Foil and braid shielding for EMI protection
  • Operating Temperature: 0°C to +70°C (commercial grade); -40°C to +85°C (industrial options) 
  • Durability: Minimum 500 insertion cycles
  • Safety Standards: RoHS compliant 

Applications

  • High-Density Data Centers: Deploying in servers and storage systems where PCIe 4.0 extensions are required for add-on cards (e.g., NICs, accelerators), with the hybrid right-angle design optimizing complex cable routing in extremely cramped racks and improving airflow management .
  • Test and Development Benches: Facilitating hardware debugging and signal integrity validation in crowded setups where the hybrid orientation provides flexible probe access and component clearance without sacrificing signal quality .
  • Gaming and Workstation Customization: Enabling flexible component placement in custom PC builds where motherboard slots are obstructed by large GPUs or cooling solutions. The Up R/A male connector simplifies installation in tight spaces, while the Down R/A female connector minimizes interference with adjacent components .
  • Embedded and Industrial Systems: Supporting custom PCIe implementations in confined industrial PCs or kiosk systems where unique chassis layouts require specific, multi-directional cable routing solutions.

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