SFF-8643 8i plug/SFF-8643 4i * 2 plug

Description

Mini SAS HD 8i to Dual 4i Internal Cable Assembly – High-Speed Fanout for SAS 24G and PCIe Gen 4.0 Architectures

The Mini SAS HD 8i to Dual 4i internal cable assembly, featuring one SFF-8643 8i plug and two SFF-8643 4i plugs, is a high-performance fanout solution designed to split a single 8-lane SAS or PCIe interface into two independent 4-lane channels. Engineered for SAS 6G/12G/24G and PCIe Gen 4.0 signaling, this cable supports flexible system design and high-bandwidth data transmission in enterprise storage and compute environments.

⚙️ Key Features

• Connector Configuration:
  • Mini SAS HD 8i plug (SFF-8643) to 2 × Mini SAS HD 4i plugs (SFF-8643)
  • Enables bifurcation of a single 8-lane host interface into two 4-lane targets
• Cable Options:
  • Available in two configurations:
    • Long type – for extended reach and flexible routing
    • Short type – for compact installations and tight enclosures
• Protocol Compatibility:
  • Fully supports SAS 6Gbps, 12Gbps, and 24Gbps per lane
  • Compatible with PCIe Gen 4.0 signaling for NVMe and hybrid storage systems
• Signal Integrity:
  • Differential impedance: 100 ohm / 85 ohm
  • Optimized for low insertion loss and minimal crosstalk across all signal pairs
• Wire Gauge Options:
  • Available in 30AWG to 28AWG, balancing flexibility, durability, and high-speed performance
• Mechanical Design:
  • Compact, high-density connectors with secure latching and molded strain relief
  • Ideal for space-constrained internal routing and airflow optimization
• RoHS Compliant:
  • Manufactured in accordance with global environmental and safety standards

🧩 Applications

• Enterprise Storage Systems: Connects SAS 24G RAID or HBA cards to dual backplanes, expanders, or drive cages
• Data Centers: Enables high-speed internal links in servers, JBODs, and storage enclosures with scalable drive configurations
• High-Performance Computing (HPC): Supports low-latency, high-bandwidth connectivity between compute nodes and storage fabrics
• OEM & ODM Integration: Ideal for custom server and storage builds requiring bifurcated SAS or PCIe routing
• PCIe and SAS Hybrid Deployments: Facilitates flexible architecture designs using shared cabling infrastructure