On the hunt to finally put 4G inside my CF-C1... HELP!

Hey guys! So as you know, I have a MK2 CF-C1BTFBZ1M.

I have a GOBI2000 module in it with AT&T. The 3G on AT&T is faster than Sprints 4G is... With that being said, my interest has peaked to try to get INTERNAL 4G into my CF-C1...

From what I can tell, the new Sierra Wireless chips are marketed as an MC7710 for AT&T and an MC7750 for Verizon: Sierra Wireless - MC7710 LTE and HSPA+ wireless module

With that bing said. I was searching eBay for MC7710 chips and can't find ANYTHING! My idea is that the USB sticks have them inside of them, so I searched for this: ATT 4G usb | eBay Question then is this:

1) Which one do I buy?
2) Most importantly: Does it have an MC7710 inside of it??
3) Will it work inside the Toughbook??
4) What is the difference between the MC7700 and MC7710... I can't tell... but the 7710 HAS to be better right?

Thanks!

 

3) it must work, but only you can test it )
4) WCDMA:
850/1900/2100 MHz (MC7700)
900/2100 MHz (MC7710)
GSM/GPRS/EDGE:
850/900/1800/1900 MHz (MC7700)
900/1800/1900 MHz (MC7710)

Also, LTE/EV-DO (MC7750)
LTE/HSPA+ (MC7700/7710)

 

This isn't helpful BarrMaley! lol