PCIe Gen3 iPass x8 to Dual External Mini SAS HD SFF-8644 Cable

PCIe Gen3 iPass x8 to Dual External Mini SAS HD SFF-8644 Cable

The PCIe Gen3 iPass x8 to Dual External Mini SAS HD SFF‑8644 Cable is a high‑performance external breakout cable designed to extend PCIe connectivity beyond the chassis. It converts a single host iPass x8 connector (supporting PCIe Gen3 protocols) into two independent external Mini SAS HD SFF‑8644 ports, each capable of carrying a 4‑lane PCIe link. This configuration enables flexible connection to external storage enclosures, GPU expansion boxes, or other PCIe peripherals. Engineered for signal integrity at 8.0 GT/s (PCIe 3.0), the cable features robust shielding and precise impedance control to ensure reliable data transmission over extended distances. Its latching connector designs provide secure mating, making it an ideal solution for data centre, enterprise, and high‑performance computing environments that require external PCIe expansion with minimal latency and maximum bandwidth.

• PCIe Gen3 Compliance – Fully supports PCI Express 3.0 specifications with data rates up to 8.0 GT/s per lane, while remaining backward‑compatible with PCIe 2.0 and 1.0 for versatile system integration.
• x8 to Dual x4 Breakout – Efficiently splits a single x8 host link into two independent x4 external channels, allowing direct connection to two separate devices or enclosures via SFF‑8644 interfaces.
• External Mini SAS HD Connectors – Uses the rugged SFF‑8644 (Mini SAS HD) external connector on both output ports, featuring a latching mechanism for secure, vibration‑resistant cable attachment in external cabling environments.
• Superior Signal Integrity – Precision‑matched differential pairs, low‑loss twin‑axial conductors, and multi‑layer shielding (foil + braid) minimise insertion loss, crosstalk, and EMI, ensuring clean signal transmission at PCIe Gen3 speeds over cable lengths up to several metres.
• Passive Copper Design – No active components or retimers are required, keeping power consumption negligible and adding zero latency to the link.
• Hot‑Plug Capability – Supports PCIe hot‑plug and surprise removal, enabling dynamic connection and disconnection of external devices without system reboot.
• Flexible Cable Management – The cable jacket is flexible yet durable, facilitating neat routing through cable management trays and tight bends in rack‑mounted systems.
• Wide Operating Temperature Range – Rated from -20°C to +85°C, suitable for demanding industrial and data centre deployments.

Specifications

• Product Name: PCIe Gen3 iPass x8 to Dual External Mini SAS HD SFF‑8644 Cable
• Connector A: iPass x8 (PCIe) – 68‑position (or equivalent), Male, External/Internal (host side)
• Connector B: 2x External Mini SAS HD SFF‑8644, 4‑lane each, Male, External
• Connector Gender: Male to Male
• Cable Type: Passive copper breakout, straight to straight
• Standard Lengths: 1.0 m, 1.5 m, 2.0 m (custom lengths available on request)
• Data Rate: Up to 8.0 GT/s (PCIe Gen3) per lane; compatible with 5.0 GT/s (Gen2) and 2.5 GT/s (Gen1)
• Supported Protocols: PCI Express 3.0 / 2.0 / 1.0
• Wire Gauge: 30 AWG low‑loss twin‑axial
• Shielding: Individual pair foil shielding + overall braid and outer foil shield
• Impedance: 85 ohm ± 10% (differential)
• Insertion Loss: Optimised for PCIe Gen3 channel budget (typical < 3.5 dB at 4 GHz)
• Operating Temperature: -20°C to +85°C
• Storage Temperature: -40°C to +85°C
• RoHS Compliance: Yes, fully compliant with RoHS and REACH directives

Applications

• ernal Storage Expansion – Connect a server or workstation with an iPass x8 host port to external JBODs or NVMe drive enclosures equipped with SFF‑8644 input ports, enabling high‑capacity, low‑latency storage extension.
• GPU and Accelerator Clusters – Link host systems to external GPU expansion chassis or FPGA acceleration boxes, delivering high bandwidth for AI training, rendering, and scientific simulations.
• PCIe Test and Development – Facilitate testing of PCIe devices by providing easy‑access external ports for prototyping, validation, and debug without opening the system chassis.
• Data Centre Rack Integration – Deploy in rack‑scale architectures where external PCIe resources (e.g., smart NICs, accelerators) are located in separate trays or drawers, connected via external cabling for flexibility and serviceability.
• High‑Performance Workstations – Used in content creation, virtual reality, and engineering workstations that require external GPU or storage expansion while maintaining high throughput and low jitter.
• Custom System Integration – Ideal for system integrators needing to extend PCIe signals outside the main enclosure for proprietary modul

For custom lengths, special jacket materials, or alternative connector configurations, please contact our sales team to tailor the cable to your specific application requirements.

CAB-IPi8-2x8644

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