I have a USB Broadband Modem which was supplied free by my ISP. I am considering upgrading to a Broadband Router. Will a Router slightly improve the speed of my internet connection or slightly slow it down?
Difficult to say. Some early USB modems weren't good and did slow down your connection speed. There is some variation between manufacturers so I'd check out some reviews before buying.
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Is a Broadband Router faster than a USB Broadband Modem?