Kanex Thunderbolt 2 Express Dock with 1M Thunderbolt cable - USB 3.0, 4K/HD Dual Display support (KTD20) Support Thunderbolt daisy-chain to connect to another Thunderbolt device HDMI 1.4b spec with resolution up to 4Kx2K at 30Hz Supports 3 full speed USB 3.0 ports 5 Gbps 1 dedicated USB port for 1.5Amp fast charging Supports Gigabit Ethernet Auxiliary audio in/out combo port Plug and play