Kensington LD5400T Multi-User Thunderbolt 3 40Gbps Dual 4K Dock w/ K-Fob™ Smart Lock - 85W PD - Windows/macOS. Connectivity technology: Wired, Host interface: Thunderbolt 3, USB Power Delivery up to: 85 W. Ethernet LAN data rates: 100,10,1000 Mbit/s. Product color: Black, Silver, Data transfer rate: 40 Gbit/s, HD type: 4K Ultra HD. Power supply: 85 W, Output voltage: 5 V, Output current: 0.9 A. Windows operating systems supported: Windows 10, Mac operating systems supported: Mac OS X 10.13 High Sierra