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Green circuit board with five red SATA ports and a silver heat sink on a metal bracket

SMUGDESK

SMUGDESK 5 Port PCIe 3.0 x4 to SATA 3.0 Expansion Card with Heat Sink JMB585

SKU CH-C2W6-GQZS6

Adds five SATA 3.0 ports through one PCIe 3.0 x4 slot using a JMB585 controller with a built-in heat sink for stable multi-drive operation

  • Adds five SATA 3.0 ports for massive storage growth
  • JMB585 controller delivers reliable multi-drive performance
  • Built-in heat sink keeps temperatures low under load
  • PCIe 3.0 x4 bandwidth handles high-speed data transfer
  • Works with 2.5 and 3.5 SATA drives for flexible upgrades

Five independent SATA 3.0 ports

This expansion card converts a single PCIe 3.0 x4 slot into five SATA 3.0 6Gbps connections using the JMB585 controller. It is designed for users who need to attach multiple 2.5" or 3.5" SATA hard drives or solid-state drives to a desktop or workstation. A built-in heat sink maintains stable temperatures during continuous heavy workloads.

Suited for NAS, RAID and Chia mining rigs

The card suits builders creating home NAS appliances, RAID arrays or Chia plotting systems that demand several simultaneous SATA links. It is not for systems lacking a free PCIe 3.0 x4 slot, nor for users who require interfaces other than SATA. The standard bracket fits typical chassis without modification.

JMB585 controller with dedicated heat sink

The JMB585 chipset drives five independent SATA 3.0 ports from the x4 interface, providing enough bandwidth for multi-drive transfers. An integrated heat sink dissipates heat during long-duration operations, keeping the controller stable under sustained load.

How it compares

Measured against everything we stock in SATA, IDE & M.2 Drive Adapters, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 71% of the 1,721 comparable items (median $22.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What bandwidth does the PCIe 3.0 x4 interface cap at for the five SATA 3.0 ports?

The PCIe 3.0 x4 link provides enough bandwidth for all five SATA 3.0 ports to run at their full 6 Gbps speed simultaneously.

What bracket and drive sizes does the card support for mounting?

It uses a standard PCIe bracket and works with both 2.5" and 3.5" SATA hard drives or SSDs.

How is the card installed, and what step do users often miss?

Insert the card into a free PCIe x4 or larger slot, secure the bracket screw, connect SATA data cables to the five ports, and attach power cables to each drive — skipping drive power is the common mistake.

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