Factor in the location of your physical computer relative to your workspace and it can quickly become impossible (because the ports are full) or inconvenient (because the computer is located under your desk) to plug in more devices. Even though you might reuse the same mini USB cable for a few devices, it’s all too easy to tie up a lot of USB ports rather quickly. It’s not unusual for a home user to have a USB-based keyboard, mouse, printer, scanner, and memory card readers, as well as charging/syncing cables for iPods, phones, e-book readers and other portable devices. Although we’ve grown well beyond the days of desktop computers arriving equipped with only a few USB ports (it’s not uncommon for computers to now have 4-6+ on the back and 2-4 on the front of the case), most of us have also managed to acquire many USB-based devices.
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