This 6G 4-port eSATA controller is a high performance host adapter that provides a totalthroughputup to 20 Gbps (20,000 Mbps) via single PCIe 4-lane slot. The controller supports any SATA hard drive, SSDs or optical drive. All drives appears as individual drive and they can be configured to form a RAID group using the RAID utility of the OS. By attaching 4 high performance SSDs, a high performance, large capacity storage system can be easily created by stripping the 4 drives using the OS RAID utility.

The controller also supports connecting Port Multiplier in individual drive or RAID configuration. When combining with four Addonics 5-port PM, as many as 20 drives can be attached to any system. It is an ideal solution for attaching many external drives to a computer.

Samples of performance measurements by CrystalDiskMark

The RAID 0 in the test result below is software RAID created by the Windows 7 OS. The controller itself does not have built-in RAID function

Individual drive performance
(Samsung EVO-mSATA SSD rated for 520 MB READ and 500 MB WRITE)

RAID 0 of two drives
(2 x M2 SSD with 500 MB/sec READ and 120 MB/sec WRITE)

RAID 0 of four drives
(4 x M2 SSD with 500 MB/sec READ and 120 MB/sec WRITE)

Four SSDs attached as independent drive and bench mark tested simultaneously. The total READ speed of the 4 SSDs was over 1.8GB/sec (18 Gbps). This shows the actual total throughput of the controller is very close to 20Gbps of a PCIe 4-lane speed.


  • Connect up to  4 eSATA storage devices via a single PCIe 4-lane slot
  • 6 Gbps throughput per port
  • Total throughput up to 20 Gbps (2,000 MB/sec)* when installed into PCIe 2.0 or 3.0 slot
  • Port Multiplier (PM) compatible (configured as individual drive or RAID) 
  • Connect as many as 20 drives to system when combining with four Addonics 5-port PMs in individual drive configuration
  • Great for connecting a lot of drives or Addonics RAID Tower/Rack to any system
  • Compatible with HDD, SSD, Optical Drive and Blu-Ray Drive
  • Supports 6 Gbps, 3 Gbps &1.5 Gbps SATA
  • Install into PCI-Express 4 lanes slot (also fits into PCI-Express 8/16 Lane or the graphic card slot)
  • Fits Desktop case, rack mount system and various computing equipment with standard full height slot
  • Attached drives can form a RAID group via the OS RAID utility
  • Hot swap support - drive can be removed and added without system shut down or restart*
  • Simple plug and play
  • Supported OS: 64bit / 32bit Windows 10, 8.1, Windows 7, Vista, 2008, 2012, Linux and Mac 10.x with built-in AHCI inbox driver support, no additional driver required

* This is the maximum theoretical speed of a 4-lane PCIe 2.0 or 3.0 slot. Actual speed varies depending on the speed of the storage device


  • 6Gbps eSATA III external 4-port PCIe Gen2 4-Lane Host Adapter 
  • Supports PCIe 3.0, 2.0 or 1.0 slot
  • Total throughput up to 20 Gbps (2,000 MB/sec) in PCIe 2.0 or 3.0 slot
  • Fully compliant with Serial ATA specifications 3.0 
  • Supports SATA III transfer rate of 6.0Gbps, 3.0Gbps, 1.5Gbps 
  • Supports ATA and ATAPI commands
  • Supports Native Command Queuing (NCQ)
  • Dimension (W x L x H): ~ 98 x 100 x 18 mm. (3.85 x 3.94 x 0.71 in.) maximum measurement not including the PCI bracket.
  • Weight: ~69 g ( 2.43 oz)
  • Operating temperature and humidity: 0 - 60 degree C, 5 - 90% RH
  • Storage Temperature and humidity: -20 - 70 degree C, 0 - 95 % RH non-condensing
  • Fully RoHS compliant

    SATA data transfer rate is calculated at 10 bits=1 byte


    System Requirement

    • PC/AT or Compatible System
    • One free PCI-Express 4, 8 or 16 lanes slot or the PCI-Express graphic card slot
    • Pentium or greater
    • Minimum 32 MB RAM
    • 10 MB minimum free hard disk space
    • One of the following operating systems: 64-bit / 32-bit Windows 10, 8, Windows 7, Vista, 2008, 2012, Linux and Mac 10.x with built-in AHCI inbox driver support

    No additional files, specification sheets, guides or documentation found for product.

    Warranty: 1 year return to base

    Full manufacturers warranty details are available at the manufacturers (Addonics) web site.

    Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

    To apply for return of a product just go to our returns page.

    These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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