Xtreamer Pro user can reasonably expect full speed of copy/read/write upto the maximum speed available today in our consumer electronic industry. 4-8 Gb HD file copying to the device will be in this device a breeze. We thought a front USB 2.0  and eSATA will be found handy in case you decided to use the Xtreamer Pro as main storage device to and from  internal HDD and only an external USB storage.