Computer Ports: All You Need to Know
Although the ports may look interchangeable, each has a unique and vital purpose.
Plugs in: Printers, keyboards, iPods, speakers, and oddball computer add-ons, like fans, beverage warmers, and desk lights.
Worth knowing: USB stands for Universal Serial Bus. (Don’t ask!) Computers usually come with at least two of these ports, but if you need more, consider a USB hub, which can contain seven. Keep in mind that a hub may slow down individual devices, because the USB transmitting power is shared between them all.
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So maybe you can’t change your health overnight. But you can get a head start.