SEOMike - 4:21 pm on Jul 19, 2005 (gmt 0)

Its not the drive size but how much current the laptop USB port can deliver.

That made me curious as to where I got that idea so I pulled out the documentation for my case and it says that above 80gig it requires external power to operate.

I agree with what you said though, the power provided by the USB port dictates what will run w/o using outside power. Strange that the disk came with documentation placing a size that would require extra power to run. I've plugged my 40gig in some older computers and they couldn't run it w/o the power supply. Maybe the manufacturer just "ballparked" it. :)