Supported hardware: LG 27GL850-B

[Zerwin]

The monitor LG 27GL850-B has 2 USB ports on it's back that can be used by connecting the adjacent USB-B port.
uhubctl result:

╰─λ uhubctl
Current status for hub 6-3 [0451:8140, USB 3.00, 4 ports, ppps]
Port 1: 06a0 power Rx.Detect
Port 2: 04a0 off
Port 3: 04a0 off
Port 4: 06a0 power Rx.Detect
Current status for hub 5-3 [0451:8142 990908416563, USB 2.10, 4 ports, ppps]
Port 1: 0100 power
Port 2: 0000 off
Port 3: 0000 off
Port 4: 0103 power enable connect [043e:9a39 LG Electronics Inc. LG Monitor Controls 009NTRL7H398]

I also checked that after turning the power off, a phone I had plugged in actually stopped charging.