---
title: bLength
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iousbdevicecapabilitydescriptorheader/1546416-blength
---

# bLength

The size of the descriptor.

## Declaration

```occ
uint8_t bLength;
```

## See Also

### Getting the Properties

- [bDescriptorType](kernel/iousbdevicecapabilitydescriptorheader/1546316-bdescriptortype.md)
- [bDevCapabilityType](kernel/iousbdevicecapabilitydescriptorheader/1546172-bdevcapabilitytype.md)