I needed a USB hub to connect additional devices. It should provide additional power (i.e. it must be of the active type). Due to the fact that I have USB3 on the NAS, I also wanted to decide on one.
My first choice was LogiLink model UA0149. It looks really pro, has a metal casing and mounting holes. Additionally, when mounted on the wall, placing the dongle will ensure good RF range.
Provides 4 USB 3.0 ports and additional power. Unfortunately, the distance between the ports turned out to be too small and I couldn't plug in all the USB dongs.
The next choice was also Logilink ad different model UA0112A: