---
title: bLength
framework: usbdriverkit
role: symbol
role_heading: Instance Property
path: usbdriverkit/iousbdevicecapabilitydescriptorheader/blength
---

# bLength

## Declaration

```occ
uint8_t bLength;
```

## See Also

### Accessing the Descriptor Properties

- [bDescriptorType](usbdriverkit/iousbdevicecapabilitydescriptorheader/bdescriptortype.md)
- [bDevCapabilityType](usbdriverkit/iousbdevicecapabilitydescriptorheader/bdevcapabilitytype.md)