UM IP gateways. IPv6 support for UM IP gateways. Enabling and disabling a UM IP gateway. Overview of UM IP gateways. Traditionally, gateway is a term that describes a physical device that connects two incompatible networks.
SDXC. SDXC is the next version of the SD standard, which is designed to allow storage capacities from 32 GB to 2 TB (Terabytes). SDXC cards in current production have capacities up to 64 GB only. They are formatted with exFAT file format.
They say it supports SDXC, so whatever is the highest spec for that it supports. If the card is SDXC then it's supported. Unfortunately, that is not true for both size and speed, because those are moving targets and for obvious reasons as well.