brand new uno will not show up in serial ports on windows or mac! please help!!!

Hey guys,

So I've been searching for an answer to this problem for weeks now, all over the internet and this forum. I can't seem to find anyone with the same problem, yet. I need this Uno to work so I can get started on some projects at work so any help will be greatly appreciated!!!

Board: Arduino(genuine) UNO R3(new teal color and everything) with ATMega328p-pu chip Main computer I'm trying to use it with: Macbook pro late 2011 with 10.7.5

Problem: Brand new UNO does not show up in serial port menu on either windows or mac computers. But board powers on, LED light lit and ON light is lit.

Tried solutions: Different usb cables. Searched for same problem in forums, found nothing close. Different USB ports on both computers.

I should mention I'm quite new at all of this.

I have another UNO with the blue color(it's an original though) and that one hooks right up and works perfectly with my Mac. I'm so confused, any help here would be so great!

Thanks! Matt

Sounds faulty - contact your supplier for a replacement.

Thas what I was thinking too. Thanks!