Targus Ultralife USB Hub with Ethernet Port for use with Ultrabooks and PCs (ACH121US) Compatible with Ultrabooks and PCs 3 USB 2.0 ports for extra connectivity 10/100 Ethernet port for Internet connection (driver required) Tethered cable ensures your cable wont get lost Unit Dimensions: 4.13 inch L x 2.33 inch W x 0.63 inch H Limited warranty does not cover products purchased from 3rd party sellers