PCIe 4.0 x4 Male to x4 Female Extension Cable

The PCIe 4.0 x4 Male to x4 Female Down R/A Extension Cable is a high-speed passive interconnect solution designed for space-constrained systems requiring both full-bandwidth PCIe 4.0 extension and optimized cable routing. This cable maintains the complete x4 lane configuration, supporting a total bandwidth of approximately 7.88 GB/s at PCIe 4.0 speeds of 16.0 GT/s per lane while ensuring backward compatibility with PCIe 3.0/2.0/1.0 devices. The incorporation of a Down Right-Angle (Down R/A) connector minimizes vertical profile during installation, making it ideal for low-profile chassis, dense server racks, and compact workstations. Engineered with precision 85-ohm impedance-matched wiring and multi-layer shielding, this solution delivers reliable signal integrity for high-performance applications including data centers, test benches, and custom computing systems.

Features

• Full x4 Lane Support: Preserves all four PCIe lanes, ensuring maximum bandwidth utilization of approximately 7.88 GB/s for PCIe 4.0 devices requiring full x4 electrical interfaces.
• Down Right-Angle Connector: The Down R/A design (typically on the female end) directs the cable downward relative to the motherboard plane, reducing mechanical obstruction in low-clearance environments and improving airflow management.
• PCIe 4.0 Compliance: Supports PCIe 4.0 specifications with a data transfer rate of 16.0 GT/s per lane while maintaining backward compatibility with previous PCIe generations.
• Enhanced Signal Integrity: Utilizes low-loss twin-axial cables with multi-layer foil and braid shielding to minimize insertion loss, crosstalk, and electromagnetic interference at high-speed data rates.
• 85-Ohm Impedance Control: Precisely engineered to meet PCIe 4.0 specifications for differential impedance, reducing signal reflections and ensuring signal integrity.
• Passive Design: Requires no external power or active components, relying on high-quality copper conductors and precise impedance control for reliable operation.

Specifications

• Product Model: PCIe 4.0 x4 Male to x4 Female Down R/A Extension Cable
• Connector A: PCIe 4.0 x4, Male, Edge Connector (Straight)
• Connector B: PCIe 4.0 x4, Female, Down Right-Angle (Down R/A)
• Cable Type: Passive Copper Extension Cable
• Data Rate Support: Up to 16.0 GT/s (PCIe 4.0)
• Supported Protocols: PCI Express 4.0/3.0/2.0/1.0
• Bandwidth: Approximately 7.88 GB/s (x4 configuration)
• Impedance: 85 ohms differential (compliant with PCIe 4.0 standards)
• Cable Length: Standard options: 0.25m, 0.5m, 1.0m (custom lengths available with validation)
• Shielding: Foil and braid for comprehensive EMI protection
• Operating Temperature: -40°C to +85°C (industrial grade)
• Durability: Minimum 500 insertion cycles
• Safety Standards: RoHS compliant

Applications

• High-Density Data Centers: Deploying in 1U/2U rack-mounted servers where the Down R/A connector optimizes cable routing in cramped spaces while maintaining PCIe 4.0 performance.
• Test and Development Benches: Facilitating hardware validation and signal integrity testing of PCIe 4.0 x4 devices in space-constrained laboratory environments.
• Embedded and Industrial Systems: Supporting PCIe expansion in compact industrial computers where low-profile connectivity is essential.
• Gaming and Workstation Customization: Enabling flexible component placement in small-form-factor builds where direct slot access is limited.