TUCN3669 is Thunderbolt 4 GR USB-C Docking Station. Upstream port offers up to 60 watts of Power Delivery with Up to quadruple display. HDMI and Displayport max 4096*2160@60hz. Thunderbolt4 USBC Downstream port*3. support single display 8K@30 or dual display 4K@60. Data transmission 40Gbps and 15W power supply.USB3.0 A type port*2. USB2.0 A type port*2, compatible with USB3.0 /2.0/1.1 device.USB3.0 Card reader(TF+SD), Gigabit ethernet*1. audio jack(MIC+ Earphone）