I couldn't find anything referring to this model of card specifically but hopefully someone can help out or at least tell me conclusivly that it's a lost cause. I have a Telstra 4G LTE USB dongle (Sierra AirCard 320U) that I'm trying to get to work with an RB751. I'm very new at MikroTiks (although I do have other people helping me as well) but I've been told I need to get the right info and data channels as well as the modem init string, phone and dial command. Does anybody have any info on how I would go about finding them. I've done lots of Googling and haven't gotten very far yet. Anything you could suggest would be great. Thanks.