I went to buy the corresponding 6-in-1 model from Baseus, but the store informed me that there is also an 8-in-1 model, which is slightly more expensive but likely has a better chipset. I bought it and I have connected:
1. A Dell screen with HDMI (2560 x 1440, 60Hz)
2. A Logitech unifying USB dongle for wireless mouse/keyboard (marathon mouse)
3. A gigabit ethernet cable
I have connected it via USB-C to an HP laptop (Spectre x360 15 bt-*) with Windows 10 and the latest updates. Well, everything worked perfectly right away. I didn't even need to install drivers.
I have to admit that I didn't expect everything to work plug-and-play, but I'm glad that for once I didn't have any trouble.
The device generates a lot of heat under the conditions I described - I concluded that this is mainly due to the fact that I had the HDMI screen connected (if I disconnect the screen, the temperature of the hub is very low). However, with the HDMI connected, the hub almost burns when you touch it. It might be a good idea to place it on a metal surface to dissipate the heat. It also helps that the hub's casing is made of metal.
Under no circumstances should you forget and squeeze it tightly while it is in operation (e.g. wrapped in fabric) because with so much heat, it may not only burn but also cause burns or fires after a while.
Network speed with the above configuration:
I have a 50/5 VDSL line. With a regular network card, SpeedTest.net shows 46.5 down / 4.65 up. The laptop reaches 45.9 down / 4.59 up. So, I think it's okay.
(I have heard that for 100/100 lines, there are slightly greater losses and it may drop to 90/9 - I need to test it under these conditions to say for sure)
Regarding the laptop charging, I have read that this hub can achieve it if someone separately purchases a data cable (I haven't exactly understood what kind of charging cable it is) that goes into the TypeC(PD) port (it is next to the HDMI port on the left). I assume it should be a cable like this (but I may be wrong):
[Link to the cable]
Baseus says it can charge with 100W, but I haven't tested it - there probably needs to be a separate charger that can be purchased. Maybe this one:
[Link to the charger]
I just mention it.