The is a Gigabit Ethernet PHY (Physical Layer Controller) commonly found on business-class motherboards, particularly those using Intel’s Q65, Q67, Q77, and Q87 chipsets. It was widely deployed in Lenovo ThinkCentre , Dell OptiPlex , HP Compaq Elite systems, and various Intel desktop boards from approximately 2011 to 2014.
: You can compile the Linux Base Driver (igb) from source if your distribution doesn't include it. intel 82579lm gigabit network connection driver
If the driver installs but you have no internet: The is a Gigabit Ethernet PHY (Physical Layer