For F10 patched.
I'm in Honduras. The local cell / Internet provider that covers Guatamala, Honduras, El Salvador, uses an HSDPA modem marked "GBC" and is also known as the "China Bird". It's a black usb stick that looks identical to the option unit, but its definitely not an option modem.
lsusb lists it as 1c9e:1001 with no text after it.
It automounts as a disk drive with typical Windows software on it. Nothing ever shows up in /dev/ttyUSB*, as I believe the disk mount causes it to not try mounting it as a modem. Dismounting it also does no good.