---
name: "aplmbox"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/aplmbox"
---

# aplmbox(4)

Apple IOP mailboxes

## NAME

**aplmbox** – Apple IOP mailboxes

## SYNOPSIS

**aplmbox\* at fdt?**

## DESCRIPTION

The **aplmbox** driver handles communication with various coprocessors integrated on Apple SoCs.

## SEE ALSO

[intro(4)](/intro/4.md)

## HISTORY

The **aplmbox** driver first appeared in OpenBSD 7.1.

## AUTHORS

The **aplmbox** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.