PCIe 3.0 x4 Male to x1 Female Down R/A Extension Cable

The PCIe 3.0 x4 Male to x1 Female Down R/A Extension Cable is a specialized passive adapter solution designed for low-profile applications requiring both slot adaptation and compact cable routing. This cable converts a standard PCIe x4 slot interface to a PCIe x1 interface while incorporating a Down Right-Angle (Down R/A) female connector that minimizes vertical profile for installations with limited overhead clearance. Engineered for PCIe 3.0 compliance, it supports data rates up to 8.0 GT/s per lane, providing ~985 MB/s bandwidth for x1 devices while maintaining mechanical compatibility with x4 host slots. Constructed with low-loss cables and multi-layer EMI shielding, this adapter is ideal for slim chassis, embedded systems, and space-constrained environments where downward-facing cable routing is preferred.

Features

• Down Right-Angle Optimization: The Down R/A female connector directs the cable downward relative to the motherboard plane, providing optimal clearance in low-profile enclosures and preventing interference with adjacent components.
• Form Factor Adaptation: Enables seamless integration of x1 devices into x4 slots while maintaining PCIe 3.0 electrical specifications and signal integrity.
• Space-Efficient Design: Ideal for slim server chassis and compact embedded systems where vertical space is limited and downward cable routing is necessary.
• Enhanced Signal Integrity: Utilizes 85-ohm impedance-controlled wiring with multi-layer shielding to minimize signal degradation at 8.0 GT/s data rates.
• Passive Operation: Requires no external power or active components, ensuring reliable plug-and-play functionality.
• Durable Construction: Features gold-plated contacts and reinforced connector housing capable of withstanding repeated mating cycles.

Specifications

• Product Model: PCIe 3.0 x4 Male to x1 Female Down R/A Extension Cable
• Connector A: PCIe 3.0 x4, Male, Straight Edge Connector
• Connector B: PCIe 3.0 x1, Female, Down Right-Angle (Down R/A)
• Cable Type: Passive Copper Extension Cable
• Pinout: PCIe-compliant x4 to x1 lane mapping
• Cable Length: 15cm to 50cm (standard); up to 60cm (custom, with validation)
• Data Rate: Up to 8.0 GT/s (PCIe 3.0)
• Supported Protocols: PCIe 3.0/2.0/1.0
• Impedance: 85 ohms differential
• Shielding: Dual-layer foil and braid
• Operating Temperature: 0°C to +70°C
• Durability: ?500 insertion cycles
• Compliance: RoHS

Applications

• Low-Profile Systems: Enables x1 card installation in slim servers and HTPCs where downward cable routing maximizes clearance.
• Embedded Computing: Provides reliable slot adaptation in industrial PCs and kiosk systems with height restrictions.
• Test and Measurement: Facilitates device validation in bench-top setups requiring compact cable management.
• Space-Constrained Racks: Optimizes cable routing in high-density server racks where downward orientation prevents obstruction.