How to install a Gobi Mobile Broadband card on my 1838-25U?

[maogil]

I just purchased 3 lenovo thinkpad 1838-25U with the Gobi Mobile Broadband for my company. I though it was easy to install, but I can´t find the blue and red antena wires in order to make it receive 3G signal. The tablet recognize the new hardware and the SIM card, but with out an antena It dosen´t work....any suggestions???