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ExpressSAS H644 4-Int/4-Ext Port 6Gb/s SAS/SATA LP PCIe 2.0 Host Adapter Free Shipping!

Mfr PN: ESAS-H644-000
Our PN: ATON5250025
Manufacturer: ATTO Technology
Platform(s): Mac & Win

Availability: Usually ships in 2-business days or less.



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Quick Overview

The ExpressSAS H644 is among ATTOs first host adapters to provide blazing-fast 6-Gb performance at 600MB/sec. per port.



Manufacturer Part Number: ESAS-H644-000

By utilizing a serial, point-to-point architecture, in addition to PCI Express 2.0 bus technology, ExpressSAS 6-Gb host adapters are engineered for demanding IT and digital media applications which require more performance than 3-Gb SAS/SATA can provide. The ExpressSAS H644 features four internal ports, four external ports and allows connections to 256 end-point devices.

Included with all ATTO host adapters is an easy-to-use utility enabling management, monitoring and configuration which leverages an intuitive GUI. ATTOs exclusive, field-proven Advanced Data Streaming (ADS) Technology helps users meet the most demanding performance requirements of bandwidth-intensive applications. ADS achieves this performance increase by implementing a combination of features engineered to allow for the controlled acceleration of data transfers.


  • x8 PCIe 2.0 host interface
  • 4 internal / 4 external ports in a low-profile form factor
  • Outstanding performance with up to 6-Gb/sec per port
  • SAS,SATA,SATA II connectivity
  • Exclusive Advanced Data Streaming (ADS) Technology
  • Support for up 256 end devices
  • User-friendly GUI based configuration utility
  • Driver support for Windows , Linux and Mac OS X
  • RoHS Compliant
  • 3-year standard product warranty


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