You will find there's port for an exterior power source but its related directly to the 5V line so if you must externally power, we advocate prying open the case and slicing the red 5V line with the USB connection.
Our https://harleydebj722656.blogsumer.com/29875537/5-tips-about-qvs-hdmi-ultrahd-8k-48gbps-with-ethernet-female-to-female-gender-changer-you-can-use-today