---
name: "jmphy"
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/jmphy"
---

# jmphy(4)

JMicron JMP202/JMP211 10/100/1Gb Ethernet PHY

## NAME

**jmphy** – JMicron JMP202/JMP211 10/100/1Gb Ethernet PHY

## SYNOPSIS

**jmphy\* at mii?**

## DESCRIPTION

The **jmphy** driver supports the JMicron JMP202 10/100 and JMP211 10/100/1Gb Ethernet PHYs.

## SEE ALSO

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

## HISTORY

The **jmphy** device driver first appeared in OpenBSD 4.5.

## AUTHORS

The **jmphy** driver was written by Pyun YongHyeon for FreeBSD and ported to OpenBSD by Jonathan Gray ⟨*jsg@openbsd.org*⟩.