USB 2.0 0.5A, USB 2.0 1A, USB 5v 0.5a, USB 5V 1A, USB 5V 2A what does this mean


Power USB ports, maximum current USB ports

USB was invented to connect various devices to the computer and exchange information. Also, you can connect various devices, a computer mouse, keyboard, flash drives, hard drives to USB.

USB 2.0 0.5A explanation

  • USB – port type
  • 2.0 – USB port version, the most common USB 2.0 and USB 3.0, now a modification of USB 3.1
  • 0.5A – the maximum current that the USB port can give out.

What can be connected to a 0.5A USB port

You can connect low-power devices, computer mice, keyboards, flash drives to the USB 0.5A port. Power consumption up to 2.5 watts.

What can be connected to a 1A USB port

You can optionally connect low-power hard drives to USB ports with maximum current; in some hard drives, there can be two USB connectors. In this case, one for power and information transfer the second only for power. These ports can connect devices with a power consumption of up to 5 watts.

What can be connected to a 2A USB port

In some devices, there are such ports, you can connect any device to them, but you can also connect devices that require more power, with a power consumption of up to 10 watts. External hard drives, etc.


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