External Hard Drives... what's the differences

[whutsupdoc]

I need to purchase an external hard drive for back purposes.... confusion though is in some of the terminology on these drives.

of the 2 external hard drives i'm seeing one just says EXTERNAL hard drive and seems to have a bigger foot print than the other one which says PORTABLE external hard drive.

aren't they both PORTABLE hard drives.... and why is the one with the larger case/footprint cheaper and has a larger capacity than the "Portable" drive??

[harry01]

whutsupdoc, don't know if this will help: http://www.newegg.com/product/Catego...ubcategory=414
I didn't read it all but it's interesting.

[Midknyte]

The terms are interchangeable. You are probably looking at 3.5" versus 2.5" drives.