Free Express Shipping! Microsoft Surface Thunderbolt 4 Dock Thunderbolt 4 Host Connection,3 x Thunderbolt 4 Ports,3 x USB-A 3.1 Gen 2,1 x 2.5G Ethernet LAN Port,3.5mm Audio Jack,Supports 4K 3840 x 2160, 60 Hz Displays,Tactile Port Indicators