Hey pchoi4 what os are you using and what external drive are you using? I just got a Wd My Book prem 320 gig drive with esata. Im waiting to get my esata cable Monday to test the esata transfer rates. My average usb speed was 5mb/sec. I reformatted the drive to Ntfs then in device manager in vista made sure the policies was set to performance and my average speed went to 9 to 10 mb/sec. Thats the suggestion someone gave me and it helped a little. Transfer rates are fast when i boot in xp.