Product Description Thunderbolt Dock with Thunderbolt 4 cable Docking Station USB Hubs USB Adapter Product Model: GC-B04 Material: aluminum alloy Size: 147*73*19.4MM Interface: A. Thunderbolt 4 Upstream Port (UFP) 40Gbps x 1 B. Thunderbolt 4 upstream port (DFP) 40Gbps x 2 C. DP interface 1.4 x 2 D. HDMI port 2.0 x 1 E. USB3.1 Gen 2 10Gbps A port x 1 F. USB2.0 48Mbps A port x 2 G. 10/100/1000M Gigabit Ethernet port x1 H. Headphone output/microphone combo x1 I. SD card 3.0/ TF card 3.0 x1 J. 20V/6A DC IN x1 Features: Supports a built-in m. 2 NVME(M KEY) SSD with a maximum capacity of 2TB and 10Gbps/S