LENOVO THINKPAD THUNDERBOLT 4 WORKSTATION DOCK THINKPAD THUNDERBOLT 4 WORKSTATION DOCK Color Black/Red Max Number of External Monitors 4 Weight 0.45 kg Refresh Rate 1* 8K 30Hz Via HDMI 2.1 4*4K 60 Hz AC Plug Slim Tip Hardware Requirements Host with USB-C/Thunderbolt port Warranty Type CRU Output Power Max 230W Brand ThinkPad OS Requirements Win10 64 bit, Win11 64 bit Packed Weight 1.9 kg Agency Approvals CB Audio Ports 1* 3.5 mm Audio combo Jack Charging Port DC-IN Thunderbolt Port 1* Thunderbolt Port - for Host connect 1* Thunderbolt Port - for Device connect USB Ports 4* USB-A 1*USB-C Video Ports 1* HDMI 2.1 2* DP 1.4 Ethernet 1* Gigabit Ethernet Package Type brown box Packed Dimensions (L x D x H) 270 mm x 195 mm x 85 mm Height 30 mm Length 220 mm Depth 80 mm Warranty Period Three Year Maximum Operating Temperature 40 Celsius Minimum Operating Temperature 0 Celsius Maximum Relative Humidity (%) 95% Minimum Relative Humidity (%) 5% Driver Needed Yes Input Power 20V 15A Physical Security Feature 1* NanoSaver lock slot 1*MicroSaver lock slot Power Button Yes Power Delivery Yes Shipment Group ThinkPad Universal TBT 4 Dock; 300W AC Power adaptor; Power cord; Setup poster&Warranty Poster Standard TBT 4 Cable