---
name: "exphy"
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/exphy"
---

# exphy(4)

3Com 3C905B-TX internal Ethernet PHY

## NAME

**exphy** – 3Com 3C905B-TX internal Ethernet PHY

## SYNOPSIS

**exphy\* at mii?**

## DESCRIPTION

The **exphy** driver supports the internal PHY on 3Com 3C905B-TX 10/100 Ethernet interfaces.

## SEE ALSO

[ifmedia(4)](/ifmedia/4.md), [intro(4)](/intro/4.md), [mii(4)](/mii/4.md), [ifconfig(8)](/ifconfig/8.md)