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JME(4) Device Drivers Manual JME(4)

jmeJMicron JMC25x/JMC26x 10/100/1Gb Ethernet device

jme* at pci?
jmphy* at mii?

The jme driver supports PCI Express Ethernet adapters based on the JMicron JMC260 10/100 and JMC250 10/100/1Gb Ethernet chips. The Ethernet portion of the JMC261 10/100 and JMC251 10/100/1Gb chips, which incorporate a card reader, is also supported.

The jme driver supports IPv4 receive/transmit IP/TCP/UDP checksum offload, IPv6 receive/transmit TCP/UDP checksum offload and VLAN tag insertion and stripping.

The following media types are supported:

Enable autoselection of the media type and options.
Set 10Mbps operation.
Set 100Mbps (Fast Ethernet) operation.
Set 1000Mbps (Gigabit Ethernet) operation (some models only).

arp(4), ifmedia(4), intro(4), jmphy(4), netintro(4), pci(4), hostname.if(5), ifconfig(8)

The jme device driver first appeared in OpenBSD 4.5.

The jme driver was written by Pyun YongHyeon for FreeBSD and ported to OpenBSD by Jonathan Gray <>.

September 8, 2021 OpenBSD-current