The HD2/ HD4 MBX is capable of combining the bandwidth of 2 or 4 cellular links into an unbreakable, high-speed SD-WAN connection. The HD4 MBX supports up to 8 SIM cards, with room for another 8 with the optional SIM Injector. With up to 16 cellular providers to connect to, spotty coverage will simply not be a problem. Ignition Sensing gives it the ability to turn on and off depending on whether the vehicle has started. Upon vehicle shutdown, the MBX can also shut down after a user-defined interval, saving the battery from excessive drain. The HD4 MBX also supports the optional SIM Injector, which adds another 8 cellular providers to connect with. This mitigates weak spots in cellular coverage, ensuring consistent connectivity. If your deployment crosses national boundaries, you can also use the SIM Injector to load multiple SIM cards, preventing roaming charges. FirstNet (band 14) provides first responders with a specialized LTE network with more priority and network capacity. The HD4 MBX supports band 14, providing additional coverage as the situation demands. Right out of the box, the HD4 MBX supports Gigabit LTE. For future technologies, the MBX features a swappable cellular module, so when you need to upgrade to 5G, you can simply swap your old one with a new one. The MBX is also capable of 2.5Gbps of throughput, giving you plenty of bandwidth for Gigabit Ethernet, 5G, or any future mobile technologies.