Dell P2419H Monitor, USB not recognized as 3.0
I have new Dell Monitor (P2419H) It has 4 USB ports, two USB 2.0 and two USB 3.0, All devices connected to it are shown somehow under USB 3.0 Bus > USB 2.0 Hub (480 Mb/sec not 5 Gb/sec). P2419H connected via original upstream cable to MacBook USB 3.0 port. What could be the issue here?
MacBook Air 11", macOS 10.14