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PCIe 4.0 x4 Male Down R/A to x1 Female Up R/A Extension Cable, 85-ohm Low Impedance
P4-X4MDR-X1FUR-LI PCIe 4.0 x4 Male Down R/A to x1 Female Up R/A Extension Cable, 85-ohm Low Impedance
 
Our Price: $34.00

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Product Code: P4-X4MDR-X1FUR-LI


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Description
 

PCIe 4.0 x4 Male Down R/A to x1 Female Up R/A Extension Cable, 85-ohm Low Impedance

The PCIe 4.0 x4 Male Down R/A to x1 Female Up R/A Extension Cable, 85-ohm Low Impedance, 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 requiring precise impedance matching. This cable adapts a larger PCIe 4.0 x4 slot interface to a smaller PCIe x1 slot interface, combining a Down Right-Angle (Down R/A) male connector for low-profile motherboard insertion and an Up Right-Angle (Up R/A) female connector to accommodate vertical clearance needs for connected devices. 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

  • 85-Ohm Impedance Matching: Precisely engineered to maintain 85-ohm differential impedance across the entire cable assembly, reducing signal reflections and ensuring compliance with PCIe 4.0 specifications for improved signal integrity in high-speed applications up to 16.0 GT/s .
  • Hybrid Right-Angle Orientation: Combines a Down R/A male connector for low-profile motherboard insertion and an Up R/A female connector to accommodate vertical clearance needs for connected devices, enabling flexible cable routing around obstacles in cramped spaces and improving airflow in high-density setups.
  • 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 precision copper, as referenced in 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 and signal preservation.
  • Durable Construction: Incorporates gold-plated contacts (min. 0.76µm thickness, per relevant standards ) and reinforced 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 Down R/A to x1 Female Up R/A Extension Cable, 85-ohm Low Impedance
  • Connector A: PCIe 4.0 x4, Male, Down Right-Angle (Down R/A)
  • Connector B: PCIe 4.0 x1, Female, Up Right-Angle (Up 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: -40°C ~ 85°C (industrial grade) 
  • 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 85-ohm impedance ensuring minimal signal loss and the hybrid right-angle design optimizing complex cable routing in extremely cramped racks .
  • Test and Development Benches: Facilitating hardware debugging and signal integrity validation where precise impedance matching is critical for probing PCIe 4.0 signals without introducing reflections or attenuation, and the hybrid orientation allows for flexible access in crowded setups .
  • Gaming and Workstation Customization: Enabling flexible component placement in custom PC builds where motherboard slots are obstructed by large GPUs or cooling solutions. The Down R/A male connector simplifies low-profile installation, while the Up R/A female connector provides clearance for the connected device .
  • Embedded and Industrial Systems: Supporting custom PCIe implementations in confined industrial PCs or systems where unique chassis layouts require specific, multi-directional cable routing solutions .

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