Thunderbolt 4 docking station for Thunderbolt 4 Windows 10 laptops and Thunderbolt 3 MacBooks (macOS 11 or later); also works great with non-Thunderbolt USB-C laptops; if you have a Thunderbolt 3 Windows laptop, this is not the dock for you, see part # K34009US) Supports dual monitor 4k Ultra HD (4k 60Hz) or single monitor 8k 30Hz for Thunderbolt laptops; MacBooks with the new M1 chipset will only display to a single monitor due to Apples chipset limitations (see our part #K33620NA for a dual monitor solution for Apple M1 machines); for USB-C laptops: HBR3 laptops will receive Dual 4K@30Hz or Single 4K@60Hz; HBR2 laptops will receive Dual 1080P@60Hz or Single 4K@30Hz Connect your laptop to the Thunderbolt 4 port (.8 meter Intel Certified TB4 cable included); connect your displays using one or two of the Thunderbolt 4 ports (usb-c to hdmi or usb-c to DisplayPort adapter or cable not included); unused Thunderbolt ports can connect directly to Thunderbolt devices (up to five addition