plugging 2.5 external hdd to desktop

To my surprise i just plugged in a 3.5 ext hdd to my laptop and it worked

I dont have a 2.5 ext hdd so im wondering can you do the same thing with a 2.5 ext hdd to a desktop

 

yep u can

 

I am assuming you were surprised that you plugged an external 3.5 hdd to your laptop and it worked without you having to connect an external power supply to the hard disk?

Well, I am surprised too as most 3.5 external drives need a separate power supply and can not operate on the power supplied by the PC's usb port alone.

 

no i was surprised that it worked. because they sell 2.5 hdd and 3.5 hdds so i thought 2.5 only works with laptop and 3.5 only works with desktop

 

hello 2007,

Only applies to installed internal drives.

I recycle my replaced internal desktop 3.5 drives as external backup drives for both my laptop and desktop. I will do the same
when I replace my laptop's 2.5 drives.