Mini-SAS HD SFF-8644 to Mini-SAS SFF-8088 hybrid external cable

🔌 Overview

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

• Connector B: SFF-8088 (Mini-SAS, 26-pin)

• Application: External SAS 2.0 to SAS 3.0 backward-compatible cabling

• Typical Lengths: 0.5m, 1m, 2m, 3m

📐 Technical Specifications

• Protocol Support:

• SAS-2.0 (6 Gbps)

• Compatible with SAS-1 (3 Gbps) and certain SAS-3 (12 Gbps) equipment in backward mode

• Not for PCIe or NVMe

• Signal Type: Differential signaling

• Impedance: 100 Ohms ±10%

• Wire Gauge: Typically 28 AWG or 30 AWG

• Shielding:

• Individually shielded high-speed pairs

• Overall braided/foil shielding to reduce EMI

⚙️ Use Cases

• Connects:

• RAID controller or host with SFF-8644 (Mini-SAS HD) port

• To a device, JBOD enclosure, or expander with SFF-8088 (Mini-SAS) port

• Typical Applications:

• External RAID storage systems

• Data center interconnects

• Workstations and servers with legacy SAS devices

• Desktop SAS setups with mixed generation gear

🧠 Notes

• This is a hybrid cable: It bridges two different connector generations (HD and legacy SAS).

• Supports up to 4 lanes (4x) of SAS signaling at up to 6 Gbps per lane (24 Gbps aggregate).

• Cable must be forward-direction (from host to target); reverse-direction versions are not interchangeable.