---
title: bLength
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iousbdevicecapabilitysuperspeedusb/1546178-blength
---

# bLength

The size of the descriptor.

## Declaration

```occ
uint8_t bLength;
```

## See Also

### Getting the Properties

- [bDescriptorType](kernel/iousbdevicecapabilitysuperspeedusb/1546105-bdescriptortype.md)
- [bDevCapabilityType](kernel/iousbdevicecapabilitysuperspeedusb/1546372-bdevcapabilitytype.md)
- [bmAttributes](kernel/iousbdevicecapabilitysuperspeedusb/1546119-bmattributes.md)
- [wSpeedsSupported](kernel/iousbdevicecapabilitysuperspeedusb/1546097-wspeedssupported.md)
- [bFunctionalitySupport](kernel/iousbdevicecapabilitysuperspeedusb/1546009-bfunctionalitysupport.md)
- [bU1DevExitLat](kernel/iousbdevicecapabilitysuperspeedusb/1545910-bu1devexitlat.md)
- [wU2DevExitLat](kernel/iousbdevicecapabilitysuperspeedusb/1546374-wu2devexitlat.md)