THUNDERBOLT TO GB LAN- ATB-GBL
The Apple Thunderbolt to Gigabit Ethernet Adapter lets you easily
Connect to a high-performance Gigabit Ethernet network
Small and compact, it connects to the Thunderbolt port on your Mac
Computer and provides an RJ-45 port that supports 10/100/1000BASE-T networks
Compatibility Mac: OS X v10.7.4 or later Thunderbolt-equipped Mac computer
What is in the Box :Apple Thunderbolt to Gigabit Ethernet Adapter with built-in Thunderbolt cable
