Mini SAS HD SFF-8643 to Mini SAS SFF-8087 Internal Cable

🔌 Overview

📐 Connector Details

• SFF-8643

• Mini SAS HD (High Density) internal connector

• 36-pin

• Typically found on newer RAID controllers, HBAs, and motherboards

• SFF-8087

• Mini SAS internal connector

• 36-pin

• Common on older backplanes, expanders, and SAS drives

🚀 Performance Specs

• Data Transfer Rate

• Up to 12 Gbps per lane (SAS 3.0, supported by SFF-8643)

• Backward compatible with SAS 2.0 (6 Gbps) from the SFF-8087 side

• Total Bandwidth

• 4 lanes = up to 48 Gbps (theoretical max)

• Impedance: 100 Ohms differential

• Cable Construction

• Individually shielded twisted pairs

• Overall foil/braid shielding for EMI protection

• Typically uses 30 AWG or 28 AWG wire

⚙️ Use Cases

• Connecting

• A newer RAID controller or HBA with an SFF-8643 port

• To an older backplane or expander with SFF-8087 ports

• Common in

• Enterprise servers

• Storage arrays

• SAS expanders

• Legacy upgrades

📏 Common Lengths

• 0.5 meters (most common for internal use)

• Up to 1 meter, depending on shielding and performance requirements