Intel DQ57TM User Manual

19 

The board supports up to 14 USB 2.0 ports provided by two EHCI host controllers in 
the PCH that allow the use of EHCI-compatible drivers.   

The port arrangement is as follows: 
•  Six back panel connectors 
•  Eight front panel ports (four dual-port internal headers) 
USB 2.0 support requires both an operating system and drivers that fully support 
USB 2.0 transfer rates.   

The board provides six SATA connectors through the PCH, which support one device 
per connector: 
•  Four internal SATA connectors (black) 
•  One internal eSATA connector (red) for internal or external connections 
•  One eSATA connector on the back panel for external connections 
The PCH provides independent SATA ports with a theoretical maximum transfer rate of 
3 Gb/s per port.  A point-to-point interface is used for computer to storage device 
connections. 

The Intel Q57 PCH supports Intel

®

 Rapid Storage Technology (Intel

®

 RST) which 

enables the following RAID (Redundant Array of Independent Drives) levels: 
•  RAID 0 - data striping 
•  RAID 1 - data mirroring 
•  RAID 0+1 (or RAID 10) - data striping and mirroring 
•  RAID 5 - distributed parity 

The board incorporates Intel

®

 Rapid Recover Technology (Intel

®

 RRT).  Intel RRT is a 

feature of Intel RST.  Intel RRT uses RAID 1 (mirroring) functionality to copy data from 
a designated master drive to a designated recovery drive.  The master drive data can 
be copied to the recovery drive either continuously or on request. 

When using the continuous update policy, changes made to the data on the master 
drive while the recovery drive is disconnected or offline are automatically copied to the 
recovery drive when it is reconnected.  When using the on request update policy, the 
master drive data can be restored to a previous state by copying the data on the 
recovery drive back to the master drive.