Usb docking station external interfaces lan rj45 audio out audio in kensington lock slot usb 30 usb 31 video outputs hdmi displayport 1x usb 30 ports 3 usb 31 ports 2 lan standard gigabit ethernet 101001000 mbits compatible with acer switch alpha 12 acer travelmate p458 acer travelmate p448 acer travelmate x3 x349 acer chromebook 14