![]() In a USB network, there is one host and one device. Separately from that, there’s USB-C, which is a physical connection standard that devices can use. USB 1.0 is old enough that you’ll virtually never see it, so USB2-USB4 covers the spectrum for most people. There are now six USB specifications - USB 1.0, 2.0, 3.0, 3.1, 3.2, and USB4. It turns out there’s a method to all this madness - but first, we have to explain how USB power actually works. On some desktop PCs, even when they’re turned off, you can charge your smartphone via a USB socket. Sometimes, one USB socket on a laptop is seemingly more powerful than the other. You’ve probably noticed that some wall chargers are stronger than others. ![]() ![]() Not all USB chargers, connectors, and cables are born equal. ![]()
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