I’ve got a 1640 in an external drive. I bought it over a year ago and at the time I had done ALL the homework to get the right chipset and I can burn at 16x onto the external 1640 from my desktop. On my old laptop (Compaq R4000) I had to use firewire, because the USB 2.0 ports on the lappy was just not up to snuff (couldn’t get high enough burst rates), but I had the firewire backup plan, so no real big deal. Well, I had to replace the R4000 with a shiny new “Vista” ACER that has USB 2.0, but no firewire…guess what- the USB 2.0 is slow too! I got burst rates up to about 11MB/s (yuck), and when I turned off all power management I got up to 13MB/s (still yuck). Anyway, what’s up with the laptop’s USB 2.0 ports? What can I do to rip and burn at 16x???