---
title: bFunctionalitySupport
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iousbdevicecapabilitysuperspeedusb/1546009-bfunctionalitysupport
---

# bFunctionalitySupport

The lowest speed at which all the functionality that the device supports is available to the user.

## Declaration

```occ
uint8_t bFunctionalitySupport;
```

## See Also

### Getting the Properties

- [bLength](kernel/iousbdevicecapabilitysuperspeedusb/1546178-blength.md)
- [bDescriptorType](kernel/iousbdevicecapabilitysuperspeedusb/1546105-bdescriptortype.md)
- [bDevCapabilityType](kernel/iousbdevicecapabilitysuperspeedusb/1546372-bdevcapabilitytype.md)
- [bmAttributes](kernel/iousbdevicecapabilitysuperspeedusb/1546119-bmattributes.md)
- [wSpeedsSupported](kernel/iousbdevicecapabilitysuperspeedusb/1546097-wspeedssupported.md)
- [bU1DevExitLat](kernel/iousbdevicecapabilitysuperspeedusb/1545910-bu1devexitlat.md)
- [wU2DevExitLat](kernel/iousbdevicecapabilitysuperspeedusb/1546374-wu2devexitlat.md)