Some TV boxes allow you to rename the device in the HDMI-CEC or Display settings menu.
Your TV is attempting to identify the connected device. Because many generic Android boxes use "Mbox Meson Ref" as their default product description in the firmware, the TV simply displays that internal label. mbox meson ref
A generic term for digital home entertainment centers, often running Android, that integrate TV, radio, and streaming apps. Some TV boxes allow you to rename the
The message often pops up alongside resolution info (e.g., Mbox meson ref - 3840x2160@50Hz ) whenever the box changes its output resolution or refreshes its signal. often running Android