Importing from old Macbook? (1 Viewer)

My retina macbook pro is probably going to be exchanged tomorrow.

There is a graphics issue under Mountain Lion that causes it to boot
up to a blank screen. There are a few owners having the same problem.
It sounds like a firmware issue, but I am not waiting for Apple to address it.

I backed up my current MBR so I can import it to my new MBR when
I first boot up.

The problem is, the backup drive is USB and I am not certain if the
import function will allow me to use USB or not. I seem to remember
it required a Firewire connection.....but I am not completely certain.

Anyone have an answer on how this will work?

Thanks

If you're referring to using a backup disk as the input to Migration Assistant, there's no indication that Migration Assistant cares whether the disk is connected via Thunderbolt, Firewire, or USB.
For a direct Mac-to-Mac networking or Target Disk Mode connection, the options are Firewire, Thunderbolt, WiFi, and Ethernet (no USB).
http://support.apple.com/kb/HT4889

Migration Assistant works fine off a USB drive. I've used it this year with Lion pulling from a SuperDuper backup on a USB2 drive.

And if you have any concerns, you can do a trial run of MA. Run it and confirm that it sees your backup drive.

Excellent. Thanks, Dave