A device that adds 3G or 4G (LTE) cellular connectivity to laptops ... the modem may also be available on a PCI or PCI Express (PCIe) card that plugs into an empty slot on the motherboard.

The appeal of the Netgear Orbi 4G LTE is obvious: it blankets your home in Wi-Fi that connects back to a SIM card, which means that even if your broadband falls over, you can still get online ...