Display support
Engadget tested it with an M1 MacBook Pro and a 4K Dell monitor and found 4K at 60Hz looked great. UGREEN lists one extended monitor over HDMI 2.0.

A bus-powered USB-C hub with HDMI for one 4K 60Hz screen, three USB-A ports, one USB-C data port, Ethernet, card slots and a 100W charging input. Engadget's top USB-C hub after testing a dozen.
We may earn a commission.Engadget tested it with an M1 MacBook Pro and a 4K Dell monitor and found 4K at 60Hz looked great. UGREEN lists one extended monitor over HDMI 2.0.
UGREEN lists a 100W charging port, and its product image shows 100W input and 90W output. Engadget lists 100W in and 90W to the host. The charging port does not carry data.
Engadget found data transfer ahead of other hubs in its price range and Ethernet speed on par with a more expensive dock, and noted only one usable downstream USB-C port. UGREEN lists 10Gbps USB-C and USB-A, two 5Gbps USB-A, Gigabit Ethernet and SD and TF slots.
No documentation of sleep and wake behavior was found.
Three USB-C hubs for MacBook, with Apple's port limits by model, why dual-HDMI hubs mirror on macOS, and what pass-through charging costs you.