---
title: tIOUSB20BusCurrent
framework: USBDriverKit
role: symbol
role_heading: Enumeration
platforms: [driverkit 19.0+]
path: usbdriverkit/tiousb20buscurrent
---

# tIOUSB20BusCurrent

Constants for the available current levels for USB 2.0 devices.

## Declaration

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

## Topics

### Getting the Current Limits

- [kIOUSB20BusCurrentMinimum](usbdriverkit/tiousb20buscurrent/kiousb20buscurrentminimum.md)
- [kIOUSB20BusCurrentDefault](usbdriverkit/tiousb20buscurrent/kiousb20buscurrentdefault.md)
- [kIOUSB20BusCurrentMaxPowerUnits](usbdriverkit/tiousb20buscurrent/kiousb20buscurrentmaxpowerunits.md)

## See Also

### Electrical Characteristics

- [tIOUSB30BusCurrent](usbdriverkit/tiousb30buscurrent.md)
- [tIOUSBBusVoltage](usbdriverkit/tiousbbusvoltage.md)