USB has greatly simplified things, and has only become faster and faster over time.

Except for USB 3.0, color-coded ports are not actually part of the USB standard.

White USB ports:These usually signify USB 1.x which has a maximum speed of 12Mbps.

USB ports on a laptop.

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Black USB ports:These usually signify USB 2.0, with a maximum speed speed of 480Mbps.

You’re not that likely to run into these, but if you do these are the likely meanings.

Red or Yellow USB ports:These ports are high-current or sleep-and-charge ports.

A USB hub with white ports, and a single flash drive plugged into it.

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Some red ports are justUSB 3.2ports.

Don’t be too worried about plugging the right thing in.

Apart from that, USB is largely foolproof, so plug away!

White and red USB charger adapter. There are two green and red USB ports.

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