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2 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 Jmicro Chipset for Windows10/8/7/XP/Vista/Linux
IO CREST

IO CREST 2 Port SATA III Expansion Card with Low Profile Bracket

Bottom line: The IO CREST 2 Port SATA III Expansion Card with Low Profile Bracket: JMB582 chipset hits 850 MB/s sequential across two SATA 6Gbps channels; main trade-off: only 2 SATA ports, so larger arrays need a second card or an 8-port HBA.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ JMB582 chipset hits 850 MB/s sequential across two SATA 6Gbps channels
  • ✓ No driver install on Windows XP through 11, Linux, macOS or NAS builds
  • ✓ Low-profile bracket included for SFF and 2U retro chassis
  • ✓ Hot plug and hot swap on both ports for drive swapping mid-session

Cons

  • ✗ Only 2 SATA ports, so larger arrays need a second card or an 8-port HBA
  • ✗ PCIe x1 link caps aggregate throughput below two full-speed SSDs
  • ✗ No RAID controller onboard, arrays must be handled in software
  • ✗ Vista and pre-XP retro rigs fall outside the listed OS support

Manufacturer description

The IO Crest 2 port SATA III PCI-E 3. 0 x1 card ( SI-PEX40148 ) is the easiest way to update any computer with SATA ports with a PCI-E x1 slot or larger. Once installed¸ this host card will add SATA ports with two independent channels. This allows support of two SATA devices at speeds of up to 6GB/s whether it is a SATA hard Drive or SATA device. Using the JMB582 chipset, the SI-PEX40148 can provide a maximum sequencing read/ write speed of 850 MB/s to 2 SATA 6GB/s ports. For the storage solution based on data transfer of multiple hard drives, The newly added FIS-based switching design can…

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SpecPicks Verdict

SpecPicks scored IO CREST 2 Port SATA III Expansion Card with Low Profile Bracket using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. IO CREST's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Compatible with PCI express Base Specification Revision 3. 1a
  • Compliant with Serial ATA AHCI (advanced host controller interface) Specification Rev 1. 0, Supports SATA 3. 0 transfer rate up to 6Gbps. Maximum Sequential Read / Write Speed 850 MB/s.
  • Micron JMB582 Chipset, Port Multiplier FIS-based and Command-based switching supported. Hot plug and Hot swap SATA ports. Support Gen 1i, Gen 1x, Gen 2i, Gen 2m, Gen 2x, and Gen 3i.
  • Compatible with Windows XP/7/8/10/11/MAC/NAS/Linux OS. No driver installation is required. Support install Windows OS from Win10 PE.

Full Specifications

BrandIO CREST
StyleJMB 2-Port
Style NameJMB 2-Port
Model NumberSI-PEX40148
CompatibilityMac, Linux
Item Type Name2 Port SATA III PCI-e 3.0 x1 NON-RAID Controller Card Jmicro Chipset SI-PEX40148
Mfr Part NumberSI-PEX40148
Number of Items1
Compatible DevicesDesktop Computer, Server
Hardware InterfaceATA, PCI
Warranty Description3 Year Warranty
Global Trade Identification Number00857426008468
Full listing title2 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 Jmicro Chipset for Windows10/8/7/XP/Vista/Linux

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2 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 Jmicro Chipset for Windows10/8/7/XP/Vista/Linux is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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2 Port SATA III Expansion Card with Low Profile Bracket - 6Gbps SATA 3.0 Controller PCI Express x1 Jmicro Chipset for Windows10/8/7/XP/Vista/Linux
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