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Green circuit board M.2 2280 adapter with five SATA ports

Graviton

Graviton SA-035 M.2 B+M SATA 3.0 5 Port Adapter JMB575

SKU CH-R515-MXRZ1

Adds five SATA 3.0 ports to an M.2 B+M slot via a JMB575 port multiplier supporting up to 15 drives

  • Expands one M.2 slot into five SATA 3.0 ports using JMB575
  • JMB575 chip integrates six SATA channels for port multiplier or selector modes
  • Supports up to 15 drives in cascaded configuration from a single host
  • Complies with Port Multiplier Spec 1.2 and Port Selector Spec 1.0
  • Fits NGFF Key B+M 2280 slots for broad motherboard compatibility

M.2 B+M SATA adapter for five drives

This adapter converts a single M.2 2280 Key B+M slot into five SATA 3.0 ports. It uses the JMB575 controller to provide a port multiplier or port selector function for mobile storage expansion. The board is suited for users who need multiple SATA drives from one compact slot.

Low thermal load and silent operation

The JMB575 integrates six SATA channels and a micro-processor in one chip, drawing minimal power from the host slot. No active cooling is required and the adapter produces no audible noise. CE certification confirms compliance with basic safety and electromagnetic standards.

Sustained multi-drive access via cascaded mode

Under continuous load the controller supports command-based and FIS-based switching across all five ports. Cascaded mode allows up to 15 drives to be addressed through a single host connection. The chip complies with Port Multiplier spec 1.2 and Port Selector spec 1.0 for stable long-term operation.

Highlights

  • Expands one M.2 slot into five SATA 3.0 ports using JMB575
  • JMB575 chip integrates six SATA channels for port multiplier or selector modes
  • Supports up to 15 drives in cascaded configuration from a single host
  • Complies with Port Multiplier Spec 1.2 and Port Selector Spec 1.0
  • Fits NGFF Key B+M 2280 slots for broad motherboard compatibility

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the Graviton SA-035 into an M.2 2280 Key B+M slot and what step is often missed?

Insert the board into the M.2 2280 Key B+M slot, secure it with the motherboard screw, then connect up to five drives to the SATA 3.0 ports; the step often missed is configuring the JMB575 as a Port Multiplier or Port Selector via the host BIOS or supplied utility so all five ports become active.

What maintenance or replacement will the SA-035 need over time?

The adapter has no moving parts or firmware updates documented; only the attached SATA drives and their cables may require replacement as they age.

What limit appears first when all five ports run sustained transfers?

The single M.2 SATA 3.0 host link caps aggregate throughput at 6 Gbps, so combined sustained reads or writes across the five ports cannot exceed that bandwidth.

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