---
title: IOFWSpeed
framework: IOKit
role: symbol
role_heading: Enumeration
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/iofwspeed
---

# IOFWSpeed

## Declaration

```occ
typedef enum IOFWSpeed : unsigned int {
    ...
} IOFWSpeed;
```

## Topics

### Constants

- [kFWSpeed100MBit](iokit/iofwspeed/kfwspeed100mbit.md)
- [kFWSpeed200MBit](iokit/iofwspeed/kfwspeed200mbit.md)
- [kFWSpeed400MBit](iokit/iofwspeed/kfwspeed400mbit.md)
- [kFWSpeed800MBit](iokit/iofwspeed/kfwspeed800mbit.md)
- [kFWSpeedInvalid](iokit/iofwspeed/kfwspeedinvalid.md)
- [kFWSpeedMaximum](iokit/iofwspeed/kfwspeedmaximum.md)
- [kFWSpeedReserved](iokit/iofwspeed/kfwspeedreserved.md)
- [kFWSpeedUnknownMask](iokit/iofwspeed/kfwspeedunknownmask.md)
- [kFWSpeedReserved1](iokit/iofwspeed/kfwspeedreserved1.md)