---
title: kIOUSB30HubExtStatusTxSublinkSpeedID
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/tiousb30hubextstatus/kiousb30hubextstatustxsublinkspeedid
---

# kIOUSB30HubExtStatusTxSublinkSpeedID

The transmit sublink speed identifier.

## Declaration

```occ
kIOUSB30HubExtStatusTxSublinkSpeedID = IOUSBBitRange(4, 7)
```