The GTD720 is a Thunderbolt docking station. It’s compliant with Thunderbolt 2.0 by doubling the bandwidth than Thunderbolt 1.0 to run at 20 Gbps, The GTD720 Docking Station lets user use a single connection to create high-speed, reliable transfers between the laptop and up to twelve other devices, including HDMI, Ethernet, USB, audio and daisy chaining multiple Thunderbolt devices. One USB port provides quick charging function. the GTD720 can charge with1.5A power supply.
Two audio jacks are for line in and line out. Both connectors support analog and digital audio. Digital audio supports surround sound with SPDIF connection.