Server backpanel Supermicro BPN-SAS3-743A-N4 — 8-port SAS3/SAS2/SATA3 expansion backplane

Supermicro BPN-SAS3-743A-N4 is an 8-port server backpanel that supports SAS3, SAS2 and SATA3 drives. It is designed for use with compatible Supermicro chassis and controller cards to provide an internal expansion interface for up to eight hot-swap storage devices. The backpanel enables consolidation of multiple drive connections into a single accessible module, simplifying drive installation and replacement while maintaining support for high-speed SAS and SATA links.

Advantages

This backpanel provides a compact and standardized connection point for eight drives in a single module, enabling straightforward integration into Supermicro server systems. It supports high data transfer rates for SAS3 and backward compatibility with SAS2 and SATA3, ensuring flexible use with a variety of enterprise and nearline drives. The design permits hot-swap operation and reduces cable complexity by centralizing drive connections, which helps maintain serviceability and uptime in rack-mounted servers.

Suitable for

• Server systems requiring expansion of internal storage bays
• Environments using SAS3/SAS2 or SATA3 drives, including mixed-drive configurations
• Racks and chassis where hot-swap accessibility and simplified cabling are needed
• Data center, virtualization hosts, and storage-heavy applications

Key specifications

• Supported drive interfaces: SAS3 (12 Gbps), SAS2 (6 Gbps) and SATA3 (6 Gbps)
• Number of drive ports: 8 internal drive connections
• Form factor: backpanel module compatible with selected Supermicro chassis
• Hot-swap support for connected drives
• Internal connector type: SAS/SATA compatible backplane connectors for controller cabling
• Data path: supports multi-lane SAS topology for aggregated throughput

How to use

Install the backpanel into a compatible Supermicro chassis according to the chassis service manual, aligning mounting points and securing the module with the provided hardware. Connect the backpanel to the host controller or HBA using the appropriate internal SAS cable(s), ensuring cable orientation and latch engagement. Insert supported SAS3, SAS2 or SATA3 drives into the drive bays; the backpanel supports hot-swap insertion and removal when the server and storage controller permit. Verify drive detection in the server BIOS/UEFI and in the operating system or RAID controller management interface before placing drives into production.

Usage recommendations

Use certified cables and controller cards compatible with SAS3 to achieve maximum transfer rates, and confirm chassis compatibility before installation. Follow ESD precautions when handling the backpanel and drives. For mixed drive types or RAID configurations, consult the controller documentation for supported topologies and firmware recommendations to ensure reliable operation.