Xoom Versions

I just bought a bricked xoom, it wont boot at all. Pwr/vol up dont work etc but it charges.

What I am looking for if someone can direct me to a thread or link to tell the differences by looking at it(markings etc) so I can d-load the correct image file.

I already own a wifi/4g xoom and it has verizon on the front and back

This one I just got thats bricked has NO verizon markings on it but it has a sim card slot alongside the SD card slot

Thanks in advance