---
title: wMaxPacketSize
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.8+]
path: iokit/iousbendpointproperties/1426352-wmaxpacketsize
---

# wMaxPacketSize

The meaning of this value depends on whether this is called with GetPipePropertiesV3 or GetEndpointPropertiesV3. See the documentation of those calls for more info.

## Declaration

```occ
UInt16 wMaxPacketSize;
```