I purchased a 5.25 usb external case which i can install a 5.25 optical drive or a 3.5, 2.5 hdd to backup data. My problem is when i installed a LG brand 5.25 dvd rewritable drive in the external case i turned it on & it came up w/ a message NEED TO INSTALL A USB HI-SPEED HOST CONTROLLER TO OBTAIN MAXIMUM PERFORMANCE. I'm running WXP/PRO on my Gateway Solo 9300 laptop. I looked on Ebay to see what this was & it shows to be a card you install in a desktop. I was just wondering is it possible to perform this backup from my laptop or do I need to use it on my desktop. Never used one of these. my laptop does not have a dvd/rw drive just a cd/rw-dvd drive. I'm wanting to backup data which is over 2gb's. Can't do this with a cd/rw drive alone. What do I need to do to accomplish this? Any help would be greatful.