HP Thunderbolt Dock 120W G4. Connectivity technology: Wired, Host interface: Thunderbolt 4. Product colour: Black, Cable lock slot type: Kensington. AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz, Output voltage: 19.5 V. Windows operating systems supported: Windows 10, Windows 11. Width: 98 mm, Depth: 98 mm, Height: 68 mm