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Small green circuit board with M.2 2242 edge connector and two SATA ports

SMUGDESK

SMUGDESK SI-MPE40150 M.2 2242 M-Key to 2 Port SATA III Adapter

SKU CH-5GCC-3Y5KA

Expands an M.2 2242 M-Key slot into two SATA III ports for adding 2.5-inch drives to desktops, NAS or industrial systems

  • Expands storage via M.2 2242 slot adding two SATA III ports
  • Jmicro JMB582 controller delivers 6Gbps per channel up to 850MB/s combined
  • Supports AHCI, NCQ and port multiplier for stable 24/7 operation
  • Fits directly into M-Key 2242 slot without using PCIe bracket space
  • Works with Windows, Linux, FreeNAS and Mac OS plug-and-play

Compact M.2 2242 SATA expansion

The SI-MPE40150 plugs directly into an M.2 2242 M-Key PCIe 2.0 slot on the motherboard. It adds two independent SATA III 6Gbps ports for connecting 2.5-inch HDDs, SSDs or optical drives. Designed for desktops, mini PCs, NAS servers and industrial systems where native SATA ports are scarce. No extra bracket space is required.

Low-profile thermal design

The card draws power from the M.2 slot and uses the JMB582 controller, which supports AHCI, NCQ and port multiplier functions for stable 24/7 operation. Sequential read and write speeds reach up to 850 MB/s across both drives. Passive cooling relies on motherboard airflow, keeping noise at zero and maintaining tidy internal cabling.

Plug-and-play across platforms

Windows, Linux, FreeNAS and Mac OS recognise the adapter without additional drivers. Hot-swap and power-management features simplify drive maintenance in NAS or file-server roles. The package includes the expansion card only; SATA data and power cables are not supplied.

Highlights

  • Expands storage via M.2 2242 slot adding two SATA III ports
  • Jmicro JMB582 controller delivers 6Gbps per channel up to 850MB/s combined
  • Supports AHCI, NCQ and port multiplier for stable 24/7 operation
  • Fits directly into M-Key 2242 slot without using PCIe bracket space
  • Works with Windows, Linux, FreeNAS and Mac OS plug-and-play

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the SMUGDESK SI-MPE40150 into the motherboard M.2 2242 slot without blocking the chassis?

Insert the card directly into the dedicated M-Key PCIe 2.0 slot; the 22x42 form factor fits flush so no external bracket is needed, then connect up to two 2.5-inch drives to the dual SATA 3.0 ports.

What ongoing maintenance does the Jmicro JMB582 controller require during 24/7 NAS operation?

The controller supports hot swap and power management, so drives can be replaced without shutting down; no firmware updates or active cooling are specified for the adapter itself.

At what throughput limit does the dual-port SATA 3.0 interface saturate under sustained sequential workloads?

Combined sequential read and write tops out at 850 MB/s across both ports, so that ceiling appears before the individual 6 Gbps per-channel limit.

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