---
title: kIOPCIUncorrectableErrorBitSurpriseDown
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1640328-anonymous/kiopciuncorrectableerrorbitsurprisedown
---

# kIOPCIUncorrectableErrorBitSurpriseDown

## Declaration

```occ
kIOPCIUncorrectableErrorBitSurpriseDown = 5
```