How to Configure 3G,4G & LTE Dongle with Mikrotik Router Tutorial 19 - YouTube
Mikrotik RB433GL - Three miniPCI slots, three Gigabit Ethernet ports and one USB port for storage or a 3G modem. - Macrotick US
MIKROTIK 2.4GHz access point with 4G (LTE) International modem, LtAP LTE kit (RBLtAP-2HnD&R11e-LTE) - The source for WiFi products at best prices in Europe - wifi-stock.com