I don't know how modem mode will help when it was the actual modem in the Superhub that was having a conflict with the UBR (So the engineer said)
It wasn't that the Superhub couldn't handle the speed, It was a configuration mismatch that resulted in the SH unable to upload faster than 1Mbit/2Mbit..
I really don't want to get the SH activated and find my upload is running at half speed