SFF-8644 to SFF-8644 Mini-SAS HD External Cable 24G

📐 Connector Details

• Connector A: SFF-8644 (Mini-SAS HD, 36-pin external)

• Connector B: SFF-8644 (Mini-SAS HD, 36-pin external)

• Orientation: Straight-to-straight or straight-to-right-angle available

• Latch Type: Push-pull tab for secure connection in dense server environments

🚀 Signal & Electrical Specs

• Protocol Support:

• SAS-4 (24G) – up to 24 Gbps per lane

• Backward compatible with:

• SAS-3 (12 Gbps)

• SAS-2 (6 Gbps)

• SAS-1 (3 Gbps)

• Lanes: 4 lanes per port (full duplex), up to 96 Gbps total bandwidth

• Differential Impedance: 100 Ohms ±10%

• Wire Gauge: 30 AWG or 28 AWG twinaxial for high-speed pairs

• Shielding:

• Individual foil shielding on each pair

• Overall foil + braided shielding for EMI/RFI protection

📏 Cable Lengths

• Typical Lengths:

• 0.5 m, 1 m, 2 m, 3 m

• Maximum Recommended Length (SAS-4):

• ~1.0 m for optimal signal integrity at 24G

• Up to 3.0 m for SAS-3 (12G) and lower speeds

⚙️ Use Case

• High-Speed External Interconnect for:

• RAID controllers to JBOD/expander enclosures

• Server-to-storage rack connections

• SAS switch fabric environments

• Environments:

• Enterprise storage

• Data center deployments

• Performance workstations

🧠 Notes

• Ensure SAS-4 compliance on both ends (HBA and device) for full 24G support

• Retimers or redrivers may be required for longer distances

• Not suitable for PCIe or NVMe over SAS (use SlimSAS or OCuLink instead)