---
title: IOBluetoothNumberOfKeyboardHIDDevices()
framework: IOBluetooth
role: symbol
role_heading: Function
path: iobluetooth/iobluetoothnumberofkeyboardhiddevices()
---

# IOBluetoothNumberOfKeyboardHIDDevices()

Returns number of keyboard HID devices on the system (Bluetooth + USB)

## Declaration

```swift
func IOBluetoothNumberOfKeyboardHIDDevices() -> Int
```

## Return Value

Return Value Number of HID devices.

## See Also

### Miscellaneous

- [IOBluetoothFindNumberOfRegistryEntriesOfClassName(_:)](iobluetooth/iobluetoothfindnumberofregistryentriesofclassname(_:).md)
- [IOBluetoothGetUniqueFileNameAndPath(_:_:)](iobluetooth/iobluetoothgetuniquefilenameandpath(_:_:).md)
- [IOBluetoothIsFileAppleDesignatedPIMData(_:)](iobluetooth/iobluetoothisfileappledesignatedpimdata(_:).md)
- [IOBluetoothNSStringFromDeviceAddress(_:)](iobluetooth/iobluetoothnsstringfromdeviceaddress(_:).md)
- [IOBluetoothNSStringToDeviceAddress(_:_:)](iobluetooth/iobluetoothnsstringtodeviceaddress(_:_:).md)
- [IOBluetoothNumberOfAvailableHIDDevices()](iobluetooth/iobluetoothnumberofavailablehiddevices().md)
- [IOBluetoothNumberOfPointingHIDDevices()](iobluetooth/iobluetoothnumberofpointinghiddevices().md)
- [IOBluetoothNumberOfTabletHIDDevices()](iobluetooth/iobluetoothnumberoftablethiddevices().md)