How-To Geek

Cellular Modem

A cellular modem is an add-on device for a mobile computer that plugs into a USB port or ExpressCard slot to provide cellular data service to the mobile computer. While many people tether their phones to their computers in order to gain access to their cellular data plan, this practice is frowned upon by many cellular providers. Dedicated cellular modems are an official way for cellular subscribers to add mobile data to their devices.

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