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  "identifier" : "/documentation/USBDriverKit/tIOUSB20BusCurrent",
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# tIOUSB20BusCurrent

Constants for the available current levels for USB 2.0 devices.

```
enum tIOUSB20BusCurrent : unsigned int;
```

## Topics

### Getting the Current Limits

[`kIOUSB20BusCurrentMinimum`](/documentation/USBDriverKit/tIOUSB20BusCurrent/kIOUSB20BusCurrentMinimum)

[`kIOUSB20BusCurrentDefault`](/documentation/USBDriverKit/tIOUSB20BusCurrent/kIOUSB20BusCurrentDefault)

[`kIOUSB20BusCurrentMaxPowerUnits`](/documentation/USBDriverKit/tIOUSB20BusCurrent/kIOUSB20BusCurrentMaxPowerUnits)


---

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