---
title: wMaxPacketSize
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.0+]
path: iokit/iousbendpointdescriptor/1425306-wmaxpacketsize
---

# wMaxPacketSize

## Declaration

```occ
uint16_t wMaxPacketSize;
```